{"as_of":"2026-08-16T16:52:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:d742fdd9576dead98a21e95efca492a2fd80a9f4ae2386a0cdcf6215b3c0be96","coverage":[{"denominator":147,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":100,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-14T13:52:25.419522Z","state":"measured"},{"denominator":100,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":100,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-16T06:30:59.297886+00:00","state":"measured"},{"denominator":0,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"cited_works","source_observed_at":null,"state":"measured"}],"external_citation_measurements":[],"inbound":[],"links":{"evidence":"/evidence","html":"/paper/1908.04246/citation-record","integrity":"/paper/1908.04246/integrity","json":"/paper/1908.04246/citation-record.json","paper":"/paper/1908.04246"},"outbound":[{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.682293Z","title":", \" * write output.state after.block = add.period write newline","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":1,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.682293Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:cfcd36a7fd2e458db826b97e0e251bf9402e5760531c4e124a07758784d9515b","observation_id":"cc9f26c0-b9dc-4bf7-be9f-8ea8a30ea8c4","resolution":{"observed_at":"2026-08-14T13:52:24.682293Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.695836Z","title":"write newline","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":2,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.695836Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:346e486c0157ffae4cda8eeca76d2f3a46f9fbe79db3c9818bf2a05cecc639e8","observation_id":"42f97a81-275b-4e95-9baa-f6ad203f4f45","resolution":{"observed_at":"2026-08-14T13:52:24.695836Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.705953Z","title":"2003, , 341, 1179","venue":null,"work_id":null,"year":2003},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":3,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.705953Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:fae7a70ff2dc472dcf3d676ed5478e15d90f1aa0f543cbb192a94f7bbfb6e85b","observation_id":"648f9bdc-68bd-4c2b-93ec-70fbcc3601e5","resolution":{"observed_at":"2026-08-14T13:52:24.705953Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.714344Z","title":"2012, , 426, L46","venue":null,"work_id":null,"year":2012},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":4,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.714344Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:407ec921f812aa9db46e8c301630578144c064f91823cc584bb48e9dc40c5872","observation_id":"b7ce5ba2-203e-45da-ad3e-3f29e492e0a9","resolution":{"observed_at":"2026-08-14T13:52:24.714344Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.721281Z","title":null,"venue":null,"work_id":null,"year":2013},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":5,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.721281Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:53f19f0e29081eea9f72df31c1aee93b7fb00dec28658e15c33241f020395d14","observation_id":"4c57f1f1-28bd-4358-abe1-f9ba9966d531","resolution":{"observed_at":"2026-08-14T13:52:24.721281Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.727674Z","title":"& Misiriotis , A","venue":null,"work_id":null,"year":2002},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":6,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.727674Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:131d7aa67471a85b9799f1bfb6f6edabb54fe93ae41941f143371c5a87c8806f","observation_id":"a5c5fa8c-2dce-4ef5-9677-0e3a12de9d91","resolution":{"observed_at":"2026-08-14T13:52:24.727674Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.735367Z","title":null,"venue":null,"work_id":null,"year":2009},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":7,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.735367Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:e5aa093fef87b76f9968cd07c3ba51a56454a390fced32c79008ce99fea974c9","observation_id":"f199482b-704d-45a4-aeba-1103e8895780","resolution":{"observed_at":"2026-08-14T13:52:24.735367Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.743329Z","title":null,"venue":null,"work_id":null,"year":2009},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":8,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.743329Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:25f7d5bd2966de6bcea8b20cdab510ceda5eb4beca740b07c9426dfd9940256b","observation_id":"ae826b53-e4aa-4d6a-b420-f91a7c1d1f1a","resolution":{"observed_at":"2026-08-14T13:52:24.743329Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.755682Z","title":"C., Davis , B","venue":null,"work_id":null,"year":2013},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":9,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.755682Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:e46615018b640eb48f09c3ec0a6955104737a8762a979ee4636bd3a99f60df64","observation_id":"2c8d02a3-da23-4342-8193-314fd2958512","resolution":{"observed_at":"2026-08-14T13:52:24.755682Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.762386Z","title":"& Tremaine , S","venue":null,"work_id":null,"year":1987},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":10,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.762386Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:1dcd6f5988b907ed09045adaeca15f4c9d6f7b6b1097992bffb6692727556eac","observation_id":"0c0e9379-3f53-43b9-b0d8-eea0f1e363cd","resolution":{"observed_at":"2026-08-14T13:52:24.762386Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.769674Z","title":"A., Elmegreen , B","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":11,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.769674Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:696ba5479a21af7c3d44bb4294fd325a93d8502b24c5a35a5098c5b3b94ee153","observation_id":"8f69a6a1-beea-470a-8525-260edf1d05ed","resolution":{"observed_at":"2026-08-14T13:52:24.769674Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.776598Z","title":"L., Bertin , G., Stockton , A., et al","venue":null,"work_id":null,"year":1994},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":12,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.776598Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:83b26721e8f5cee4b8d6d096908ea4d4194e88b1c0e4b299b3269f1c175fb014","observation_id":"dfa58dd0-71e3-40be-a977-4f8f556be50b","resolution":{"observed_at":"2026-08-14T13:52:24.776598Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.783272Z","title":"L., Buta , R., Knapen , J","venue":null,"work_id":null,"year":2004},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":13,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.783272Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:7d0ef18fa25a7bcbaf9fdefad7defc556692f7c8844b14deafc139e2583a48b3","observation_id":"4c572d9f-398d-4f15-a568-b84c406ffabf","resolution":{"observed_at":"2026-08-14T13:52:24.783272Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.792860Z","title":"L., Puerari , I., Knapen , J","venue":null,"work_id":null,"year":2001},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":14,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.792860Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:2aeb22127a8365185081a601fe7fa2cdc532dd8176dde125dddb705375022522","observation_id":"6abf52b8-fb6f-4940-b40f-1b37c64aed24","resolution":{"observed_at":"2026-08-14T13:52:24.792860Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.800470Z","title":"& Combes , F","venue":null,"work_id":null,"year":2002},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":15,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.800470Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:94d9bc1fc0fd09bb4ea985354a7f4f1413e5e21807b59a0e3958ea03c5d83f96","observation_id":"3266c37f-4b6e-4ca3-951b-f6c6a38fa805","resolution":{"observed_at":"2026-08-14T13:52:24.800470Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.807312Z","title":"& Block , D","venue":null,"work_id":null,"year":2001},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":16,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.807312Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:499eeb5f909961ac417dc83d03da24bdee1bb3300e647c1b481f117bb9ef290c","observation_id":"040dee89-54c0-4a82-9470-7927efff8cc8","resolution":{"observed_at":"2026-08-14T13:52:24.807312Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.813728Z","title":"L., & Knapen , J","venue":null,"work_id":null,"year":2003},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":17,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.813728Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:99139652104c93f8ecec3a75cc4d174025d83c42f2c79e34166526276d1c7106","observation_id":"e969d96d-f2ca-4020-9f37-7b1f19332ebe","resolution":{"observed_at":"2026-08-14T13:52:24.813728Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.819125Z","title":"2004, , 127, 279","venue":null,"work_id":null,"year":2004},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":18,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.819125Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:5f8dce680cae56fc382e8d28ecfb9b41ccea09eae23fe9388c60e2556362ed76","observation_id":"4d0820b3-086f-4025-b9be-85329c5c0636","resolution":{"observed_at":"2026-08-14T13:52:24.819125Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.828655Z","title":"2005, , 130, 506","venue":null,"work_id":null,"year":2005},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":19,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.828655Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:c0e4068854e86f90d3c5dadbe9c0da21d8c8e02ef71d54bb3e6de8a961ed1942","observation_id":"a160da60-6671-4b9c-a3b6-013649754f49","resolution":{"observed_at":"2026-08-14T13:52:24.828655Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.834918Z","title":"J., Knapen , J","venue":null,"work_id":null,"year":2009},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":20,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.834918Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:39b48579b3b45f90d1a430bd4d16e9979efe861c55bbecc4300821a756d78c89","observation_id":"37f173d8-bd00-4b90-b860-10fc09c4d8dc","resolution":{"observed_at":"2026-08-14T13:52:24.834918Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.842929Z","title":"J., Sheth , K., Athanassoula , E., et al","venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":21,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.842929Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:7bd4992a7291cd0ebce1272e38947487219325772268f8ef14c8bffc89dcc44f","observation_id":"9add5ce2-be51-4d87-bfda-42bce4e64628","resolution":{"observed_at":"2026-08-14T13:52:24.842929Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.849979Z","title":"A., Knapen , J","venue":null,"work_id":null,"year":2013},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":22,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.849979Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:94b2d143fe876ebb4011aee1f154f42826aa1521d9fe71cf412ec211009eb769","observation_id":"41371519-c597-451b-b1c9-d4421e56c257","resolution":{"observed_at":"2026-08-14T13:52:24.849979Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.858831Z","title":"& Sanders , R","venue":null,"work_id":null,"year":1981},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":23,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.858831Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:385a6acb893cfdac69eb6631db08385cf31a26a655e11f8bfc5a5bd4cbca3278","observation_id":"182f6ba2-af8a-48cb-b16a-8c4b9fe8ad99","resolution":{"observed_at":"2026-08-14T13:52:24.858831Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.865862Z","title":"& Athanassoula , E","venue":null,"work_id":null,"year":1982},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":24,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.865862Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:dbc1a1968f5dc18639cd9c02a84e319f593d634a5c8dd56120bc1002712e185b","observation_id":"6308d032-4360-44f0-87fc-f5f1907afee4","resolution":{"observed_at":"2026-08-14T13:52:24.865862Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.874239Z","title":"& Athanassoula , E","venue":null,"work_id":null,"year":1988},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":25,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.874239Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:e8ed62139bcb7fe93d3972c234908575b10b0ef33ea9355536b3fd7bdc02cf90","observation_id":"ac595744-217e-4000-9b3d-be58d58ec056","resolution":{"observed_at":"2026-08-14T13:52:24.874239Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.881458Z","title":"L., Berrier , J","venue":null,"work_id":null,"year":2012},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":26,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.881458Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:50474e5bc3221134692e934b5b14e56230e76554f71606200f73fdc1dc0dd6a0","observation_id":"b9b2b4f0-2e9a-4e66-acd4-9ef7761997fe","resolution":{"observed_at":"2026-08-14T13:52:24.881458Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.889910Z","title":"L., Berrier , J","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":27,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.889910Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:df336741c7afbaf5196aff0a561365b083077914cf9f249d2a0d0089aea62ce3","observation_id":"25e6af29-667d-42de-b3cb-bf586d2a12ca","resolution":{"observed_at":"2026-08-14T13:52:24.889910Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.897396Z","title":"L., Graham , A","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":28,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.897396Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:0d96dbfff6cd7c378e9a8d8d329eeb77af8a3c42cffa6c591cea670518269319","observation_id":"d1c33f80-af8c-4224-b845-552c95118076","resolution":{"observed_at":"2026-08-14T13:52:24.897396Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.905268Z","title":"L., Graham , A","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":29,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.905268Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:05b9a2fcc31a424046c1c22e81811bdce6e1027b65b051289699812e4fa79f27","observation_id":"199000f6-53ef-4c80-a95f-69f710f213cb","resolution":{"observed_at":"2026-08-14T13:52:24.905268Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.911118Z","title":"L., Kennefick , D., Kennefick , J., et al","venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":30,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.911118Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:0495a368f66dae50c07034a33c6a443a7e15450dcc77abaeffe1b9f609469df2","observation_id":"a0ccc6b4-2945-49a7-89a1-a3ee1738fd58","resolution":{"observed_at":"2026-08-14T13:52:24.911118Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.917661Z","title":null,"venue":null,"work_id":null,"year":2014},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":31,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.917661Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:4a1a768a33a8b6d1d57a27e2a5d2e0c57dbc32d3cd7c1efb898bc6af73902416","observation_id":"7c7e630b-c262-4a32-9c53-e280910ac12c","resolution":{"observed_at":"2026-08-14T13:52:24.917661Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.926125Z","title":"1959, Handbuch der Physik, 53, 275","venue":null,"work_id":null,"year":1959},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":32,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.926125Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:02704014e3e41b831f0b3095cd3197190fb63a9323c1ed2cda7de0d84183e21b","observation_id":"22b96ef1-010c-4fc3-93ce-f3b01b185ad3","resolution":{"observed_at":"2026-08-14T13:52:24.926125Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.932318Z","title":"2016, PhD thesis, University of Oulu","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":33,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.932318Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:66dd6e6719e73c145629e327821eb1f9197fc078befda87561dd07e064d13060","observation_id":"16a59db6-20d6-41a2-8063-7e56b82f1e78","resolution":{"observed_at":"2026-08-14T13:52:24.932318Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.937990Z","title":"H., & Salo , H","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":34,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.937990Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:55fad0af8e9c34e0355cc217688177497eab06fb2cea2af3a749c6c84daf30eb","observation_id":"d3896292-f5ce-4ca1-b676-76aa8ccd4239","resolution":{"observed_at":"2026-08-14T13:52:24.937990Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.944645Z","title":"2016 a , , 596, A84","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":35,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.944645Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:0e493d982e11918a98393c13b8a773b73afea1b6c8d90f9f0b922e846b3d1688","observation_id":"ebb556ec-698d-4f4d-96f6-5d615191b832","resolution":{"observed_at":"2026-08-14T13:52:24.944645Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.950772Z","title":"2016 b , , 587, A160","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":36,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.950772Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:f69ce03aaa285c8fac44ce8fb7f50f93e1c7cf2b1b2ea4553e14036c419c22a5","observation_id":"87557802-ef7a-4cc0-b2ce-2c1b3ce39580","resolution":{"observed_at":"2026-08-14T13:52:24.950772Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1611.01844","last_updated":"2016-11-06T20:56:32Z","snapshot_observed_at":"2026-08-14T21:31:44.760517Z","submitted_at":"2016-11-06T20:56:32Z","title":"The (dark) halo-to-stellar mass ratio in the Spitzer Survey of Stellar Structure in Galaxies (S$^4$G)","version":1},"cited_work":{"arxiv_id":"1611.01844","doi":null,"metadata_source":"pith","pith_arxiv_id":"1611.01844","snapshot_observed_at":"2026-08-14T13:52:25.862200Z","title":"The (dark) halo-to-stellar mass ratio in the Spitzer Survey of Stellar Structure in Galaxies (S$^4$G)","venue":"astro-ph.GA","work_id":"191230d8-2e60-4e26-baf3-420981d8e2ae","year":2016},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":37,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.956347Z"},"links":{"cited_paper":"/paper/1611.01844","citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:d247d66653c327db963b848b8f40a389017626138135c77170f76a8053992667","observation_id":"11fcc943-ee8c-4957-834a-98f0317cd11d","resolution":{"observed_at":"2026-08-14T13:52:25.868292Z","resolver_source":"local_arxiv","status":"metadata_mismatch"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.962190Z","title":"2015, , 808, L8","venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":38,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.962190Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:90aafb9c1cbc3ef927070e4bbc017daf0eaf857a0e05cf12c0fcdbb1f6495f35","observation_id":"041b5a68-6240-417a-890e-f57a454154f6","resolution":{"observed_at":"2026-08-14T13:52:24.962190Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.967573Z","title":"2013, , 766, 34","venue":null,"work_id":null,"year":2013},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":39,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.967573Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:caeb1ed27bba46e4a3fea27a2bfd61a3dc110a9bddf03014a246a98a4271aa2c","observation_id":"d5245a60-da63-40cd-94f2-c383fe636519","resolution":{"observed_at":"2026-08-14T13:52:24.967573Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.973738Z","title":"W., & Verdes-Montenegro , L","venue":null,"work_id":null,"year":2009},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":40,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.973738Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:e2e9a49123515c3acaeae869199794f72508810361bd767d32734a1c142a42a8","observation_id":"a1bd7a57-e4fa-4352-9df0-90f4c7066977","resolution":{"observed_at":"2026-08-14T13:52:24.973738Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.978990Z","title":null,"venue":null,"work_id":null,"year":1990},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":41,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.978990Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:24aca1829c2157448e8d79738735ead82a518a9e32875cd23e1325cb71b35096","observation_id":"64565c9b-a6f3-47be-993c-b9cf2144bd7a","resolution":{"observed_at":"2026-08-14T13:52:24.978990Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.984454Z","title":null,"venue":null,"work_id":null,"year":1985},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":42,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.984454Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:2a7c1bc6b0ea3a99f443a298381ad33a9af595222319fe866c97e091b8a6fb53","observation_id":"c7a7145c-1989-47b2-ad13-5d6f4f8253cf","resolution":{"observed_at":"2026-08-14T13:52:24.984454Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.990855Z","title":null,"venue":null,"work_id":null,"year":1989},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":43,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.990855Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:ecb78f1c1e3af1ad597e0fcfc27c31b9293952110501d13e1a7502e38ebc260d","observation_id":"98569b81-f0c6-4314-8f05-9840a4507c55","resolution":{"observed_at":"2026-08-14T13:52:24.990855Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:24.997631Z","title":"G., Elmegreen , D","venue":null,"work_id":null,"year":1992},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":44,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:24.997631Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:49d864f1b9937ea44bf5864052174b26793f9da38602cf5c301a05a883d66cb4","observation_id":"b1238fd8-036a-49da-82b7-7f011ae84c29","resolution":{"observed_at":"2026-08-14T13:52:24.997631Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.003657Z","title":null,"venue":null,"work_id":null,"year":1981},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":45,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.003657Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:283a6f7a8d8b298bdc86f0253b97164687356d68627fc7ffaa7dc71bff2f55d7","observation_id":"6a1dcf9c-b2b3-478c-a0c5-88193cd71142","resolution":{"observed_at":"2026-08-14T13:52:25.003657Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.009234Z","title":null,"venue":null,"work_id":null,"year":1982},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":46,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.009234Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:1b3992f66ad98750e8de33ca50c171ef94e79b79cec25134bee84e645a0b19fc","observation_id":"eeddfb2b-caa0-4f35-9e0a-c000a1516ef3","resolution":{"observed_at":"2026-08-14T13:52:25.009234Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.017567Z","title":null,"venue":null,"work_id":null,"year":1984},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":47,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.017567Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:bb9d093579c703c1ad0b42a28cd79ea7552e4341716df25ad9737516d978e040","observation_id":"e0efa404-26ec-4b74-b7ab-30ff545e616a","resolution":{"observed_at":"2026-08-14T13:52:25.017567Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.024738Z","title":null,"venue":null,"work_id":null,"year":1987},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":48,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.024738Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:8c3560fa580f6ea486fe985bc565b9b90a197e6ef38965c01dc32c21cedf61de","observation_id":"6d054d85-e793-43dc-8576-7e074618ca5d","resolution":{"observed_at":"2026-08-14T13:52:25.024738Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.031444Z","title":"M., Elmegreen , B","venue":null,"work_id":null,"year":2011},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":49,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.031444Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:16f4b24a05e1cd1bae6064424efef64d619ab7af6bf1aea14c305ae75eed2b20","observation_id":"5df323b5-7894-402e-88b8-c88e7a14b306","resolution":{"observed_at":"2026-08-14T13:52:25.031444Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.036868Z","title":"H., Leaman , R., et al","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":50,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.036868Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:109822e7768a94eb6e8b79682660231ac902765f583fa31199d7fb3b72e70c46","observation_id":"4fa28c21-6413-4606-a42c-0504aff58822","resolution":{"observed_at":"2026-08-14T13:52:25.036868Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.043314Z","title":"2018, , 474, 5372","venue":null,"work_id":null,"year":2018},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":51,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.043314Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:e120253a30f43a5edc2f86fccf134ae20e616508f1278d79748b0a7e4a32bad5","observation_id":"4be8e9d0-177d-446e-a77c-9069c3573038","resolution":{"observed_at":"2026-08-14T13:52:25.043314Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.048899Z","title":"B., Frogel , J","venue":null,"work_id":null,"year":2002},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":52,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.048899Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:a161b7e6efcf2c93fdddcb891abc45bdd06295897c4425c4fa84691f826477b9","observation_id":"3d726177-1c3c-4101-acf4-cd9b60870ca1","resolution":{"observed_at":"2026-08-14T13:52:25.048899Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.054985Z","title":"2019, , 875, L1","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":53,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.054985Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:b968d6726fc7fc296a499483d83c2221d8d64c88c47af45fdd76285133ba14c7","observation_id":"5845012b-a9eb-4a24-8d1b-76305433657f","resolution":{"observed_at":"2026-08-14T13:52:25.054985Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.061311Z","title":"G., Hora , J","venue":null,"work_id":null,"year":2004},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":54,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.061311Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:0a41a195311ca25ddf2060778eb5a6256901736c1bfae07014172d9bca5de512","observation_id":"dadd285b-85fd-473a-b48d-4d49d3da5b6f","resolution":{"observed_at":"2026-08-14T13:52:25.061311Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.066708Z","title":"E., James , P","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":55,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.066708Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:926901df93ae20b60aeafcde23a1c535237211fbea9084583b0feea337c35b01","observation_id":"88e85c1c-9eef-4fc7-99ca-ee13140aac03","resolution":{"observed_at":"2026-08-14T13:52:25.066708Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.072587Z","title":"S., B \\'e dorf , J., Baba , J., & Portegies Zwart , S","venue":null,"work_id":null,"year":2018},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":56,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.072587Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:8dad402aa97c5ee0b5c20493bfb4acdc2900c1e6459af57c9960139a09e82466","observation_id":"8dfe6ac3-1323-42df-870d-739eb6b86ede","resolution":{"observed_at":"2026-08-14T13:52:25.072587Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.078571Z","title":"A., Seidel , M","venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":57,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.078571Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:1917c5e778d48df3859ef5f1ab8ee583a379c74a1083b22e9601a1679f36cd59","observation_id":"e61e6074-f138-4819-b614-7cb7d37a0726","resolution":{"observed_at":"2026-08-14T13:52:25.078571Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.084502Z","title":"& Athanassoula , E","venue":null,"work_id":null,"year":1993},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":58,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.084502Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:19d4a2e2192118c5bf162f11aacd4ea2b71aad049724590ad61a1f87d34cffc6","observation_id":"842f7698-3d9b-4fa0-a404-0cb764725729","resolution":{"observed_at":"2026-08-14T13:52:25.084502Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.091059Z","title":"2009, , 692, 1075","venue":null,"work_id":null,"year":2009},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":59,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.091059Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:6ea0ed3a1169ca74f26d0f0fb8f98ad67bb3b1b80b3f2343775bc6e29f6e9fdc","observation_id":"bca50c27-2c99-4f0e-a158-b411a3e5cedd","resolution":{"observed_at":"2026-08-14T13:52:25.091059Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.096945Z","title":"& Haynes , M","venue":null,"work_id":null,"year":1988},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":60,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.096945Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:2c8bf114b761f1af1f2ee69e629f0b7e59a80812c92921d48ef930432b898532","observation_id":"8c937985-45ac-422c-8a5c-e4bb194f6b0d","resolution":{"observed_at":"2026-08-14T13:52:25.096945Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.103110Z","title":"& Lynden-Bell , D","venue":null,"work_id":null,"year":1965},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":61,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.103110Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:9333bd3fbf1d5c4549147b7f045adc48c8b958237a21868b0ac994d82f33690d","observation_id":"8634203b-41a7-4dc3-b401-ce84a514bd38","resolution":{"observed_at":"2026-08-14T13:52:25.103110Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.108731Z","title":"& Lynden-Bell , D","venue":null,"work_id":null,"year":1965},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":62,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.108731Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:74cf821035f0ad7b986fffd01e2f546449067a3738b7b95b89a3e272978b3873","observation_id":"53bbe596-fda3-4f23-b221-71cc87dbb4b6","resolution":{"observed_at":"2026-08-14T13:52:25.108731Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.113967Z","title":null,"venue":null,"work_id":null,"year":2013},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":63,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.113967Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:f723c9ab85d1f07e622756f9ec9bbb0900e0ee252faf39affbcacece8b72f115","observation_id":"33b00890-f047-4262-bcd3-0934e6f25ea5","resolution":{"observed_at":"2026-08-14T13:52:25.113967Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.119422Z","title":"W., Soria , R., & Davis , B","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":64,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.119422Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:8e9e8f48ebeafce83d50726e459b2ac7fbc0613e055419dcea2e5791d92e09da","observation_id":"8f8217c5-d127-4330-89c9-ec4ea86b7f47","resolution":{"observed_at":"2026-08-14T13:52:25.119422Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.125308Z","title":null,"venue":null,"work_id":null,"year":2013},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":65,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.125308Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:14a84c8cd3f26bbcfd1abf3d8e3df81a037cf887678e35a1ae65ff5b736119ae","observation_id":"7ad5aba1-9a82-40f0-8517-a0af8f916be7","resolution":{"observed_at":"2026-08-14T13:52:25.125308Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.132582Z","title":"O., Gebhardt , K., et al","venue":null,"work_id":null,"year":2009},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":66,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.132582Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:b3e50c9b38bc1fbdc8f9d2136bb33258f7f3f38765dd59ffc0d0f79afe338312","observation_id":"da2b1de6-468b-47b9-bd4f-78e106a3ba9d","resolution":{"observed_at":"2026-08-14T13:52:25.132582Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.138561Z","title":"E., Bamford , S","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":67,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.138561Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:f4d0e081b00296e1d6fd8c14bfb0618ac9867943d79d216f52cb198e30a144f5","observation_id":"97eef8f5-391d-4e60-82b4-0f2a591b58d9","resolution":{"observed_at":"2026-08-14T13:52:25.138561Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.144760Z","title":"B., Davis , D., & Silva , P","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":68,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.144760Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:1e344f11d49b53c5ec502e926923aeb1d07708d34e29c94e3f4e3bed90e425d5","observation_id":"b7d5e7f3-c67a-4c1b-bf97-95ca6c3872c4","resolution":{"observed_at":"2026-08-14T13:52:25.144760Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.151096Z","title":"2015, , 582, A86","venue":null,"work_id":null,"year":2015},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":69,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.151096Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:875c9a09005f3c9302340e2f3400add9bbed45f2f0f6d479f73d85c0cd2c588e","observation_id":"025438b8-b39d-4e35-8710-9bd976ff2a51","resolution":{"observed_at":"2026-08-14T13:52:25.151096Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.542001Z","title":"C., Li , Z.-Y., Barth , A","venue":null,"work_id":"bca9755f-5b35-4c74-b3c8-ec8eb340dfe8","year":2011},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":70,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.156707Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:a4348c16047e765deb2c5a79a8c907112c81be857098c82e4b5f2c6671167e44","observation_id":"ab0942c5-7a96-49f8-900b-8bf8226c49bd","resolution":{"observed_at":"2026-08-14T13:52:27.549612Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.162774Z","title":null,"venue":null,"work_id":null,"year":1966},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":71,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.162774Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:6813b7fd9f28bbe921b34b9245ff3a2e603c7e6ce5fa374abd6f5b7d22badaa9","observation_id":"0257ef30-0281-4eb9-a1d9-496511ce1147","resolution":{"observed_at":"2026-08-14T13:52:25.162774Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.502615Z","title":null,"venue":null,"work_id":"86cc3845-9248-415f-90a6-ce71cd890e15","year":1975},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":72,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.168997Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:9be8ade47d5015ff59a60865f7178fe3771ee99e50f5ac317fb78b1b2dc50c04","observation_id":"ae21052d-f2fd-49b8-89ba-08d964d34ca2","resolution":{"observed_at":"2026-08-14T13:52:27.511165Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.479350Z","title":"C., & Clarke , C","venue":null,"work_id":"ba5f7295-87dd-4e19-9ae3-35001141e742","year":2011},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":73,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.175271Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:5c56e5db97cf3f9e7a1c1cdf043df8ce5b94c64caf3f984b1f8497e032cc29e6","observation_id":"0fb987b0-0c10-448e-a2cf-ec351da86272","resolution":{"observed_at":"2026-08-14T13:52:27.485717Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.447565Z","title":"& Hodge , P","venue":null,"work_id":"30dc0261-c5e1-4a27-a7fa-92eac7471829","year":1982},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":74,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.183103Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:7e86a5d477697d9b8f1953f68c45ba8cde0e47fec6e5caadfaa25b467bee051d","observation_id":"9d385de2-4035-4a6d-b101-871b56b4cd1e","resolution":{"observed_at":"2026-08-14T13:52:27.460896Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.425888Z","title":null,"venue":null,"work_id":"388b32e0-0acf-4240-9afc-bf6bbe6808dc","year":1981},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":75,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.189568Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:98bba6427bc114233810fb07e2aa9f240ac4e89ec7abee821929a5264f0b7345","observation_id":"d9849759-1387-4576-b670-b36e93da9d44","resolution":{"observed_at":"2026-08-14T13:52:27.433175Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.406247Z","title":null,"venue":null,"work_id":"ea0c98e7-09f8-4369-8565-71e78c04fce4","year":1996},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":76,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.195333Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:77180bf5a08f43bbc3cfbf9c2cf045f6170ff0469f4bd34cd7ff024a3a9c56c5","observation_id":"3ac981db-af22-4d46-af4b-b871bf02ca08","resolution":{"observed_at":"2026-08-14T13:52:27.412685Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.204999Z","title":"& Kennicutt , Jr., R","venue":null,"work_id":null,"year":2004},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":77,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.204999Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:d331705db22477941c9a87a778b0353631fa07ff3b476b4515715c4f569b0c35","observation_id":"feda9d64-7d49-464a-8c39-b7667eedd971","resolution":{"observed_at":"2026-08-14T13:52:25.204999Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.364338Z","title":"& Norman , C","venue":null,"work_id":"14fb5613-f734-416b-8fa4-e0f649293aa7","year":1979},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":78,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.212215Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:10a719f4a66ccec43858103dd2417ca748addb386619723ba7ab6118f270e1c5","observation_id":"1be4da01-b1bd-4c6b-8aed-307f4fa8f168","resolution":{"observed_at":"2026-08-14T13:52:27.371138Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.219486Z","title":"& Richstone , D","venue":null,"work_id":null,"year":1995},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":79,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.219486Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:f7b67bbd9768ce72d59214dc022d860dd093552f5b7014b5802839c51b0c9507","observation_id":"ac460a00-d01e-4544-bede-ac73ff67e55f","resolution":{"observed_at":"2026-08-14T13:52:25.219486Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.227169Z","title":"2016, , 596, A25","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":80,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.227169Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:affec11d97915a57e59e66f1254115e8fa92054bf75dc00485e00c4d6fa77a13","observation_id":"7316a123-9e09-4df3-a3ee-ff7c11c9b547","resolution":{"observed_at":"2026-08-14T13:52:25.227169Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.309283Z","title":"2014, , 441, 1992","venue":null,"work_id":"a9688ebe-65f2-495a-9878-3171d813bb4c","year":2014},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":81,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.238950Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:babb94195586673d479003ed592eec4364bfcf002a35f0fd6628a52710925999","observation_id":"731febe7-f9a7-484f-835f-d0b5678e5add","resolution":{"observed_at":"2026-08-14T13:52:27.315791Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.277026Z","title":"& Salo , H","venue":null,"work_id":"2aca18bc-9ae4-42b7-b576-4c914da416fd","year":2002},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":82,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.246194Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:67050e2498adabd55ba1af18c3bb995dbe72899ba7cc4c0d37961bb297580b37","observation_id":"6726af34-38cb-4945-a726-1a6557bee803","resolution":{"observed_at":"2026-08-14T13:52:27.284749Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.249072Z","title":"2004, , 607, 103","venue":null,"work_id":"e227bc7f-26da-4426-b2da-bade74625f35","year":2004},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":83,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.257082Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:13a09f4231812d040e08061a9d16aeb1ce6ba3b2ed5e43c0d67a784a3a5b57b6","observation_id":"083cf020-cbd3-4dfd-b054-10749ed43f37","resolution":{"observed_at":"2026-08-14T13:52:27.257319Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.225823Z","title":"2002, , 331, 880","venue":null,"work_id":"c3a64101-063e-4abd-8766-d1a382b7a76d","year":2002},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":84,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.265949Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:3c850d3fa841082fba442ed992654039b77aeb3f3b7713eb5006dabe4d5b3a7e","observation_id":"57e5b9e7-c6b5-4b1a-a275-ec050d5e5134","resolution":{"observed_at":"2026-08-14T13:52:27.234193Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.197881Z","title":"2013, , 433, L30","venue":null,"work_id":"f7ca9978-9cea-4879-9823-2a4826c998c2","year":2013},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":85,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.273566Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:32ccdf1a961858465c82f3baa68485079b7288e70511769cf2ff4084b894ac72","observation_id":"2fddbb8b-7465-4c34-b8fd-6f15e9d70e60","resolution":{"observed_at":"2026-08-14T13:52:27.207542Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.279584Z","title":"S., & Schombert , J","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":86,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.279584Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:ab960c6dcfe138b6d992dc92e2cd4a7cc6b528b8881da45bf86af62ba5b6a7cf","observation_id":"291175f5-ae7b-4ded-9a1b-3ebc55d0ccb5","resolution":{"observed_at":"2026-08-14T13:52:25.279584Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.291478Z","title":null,"venue":null,"work_id":null,"year":1964},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":87,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.291478Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:f535c92d8214b1bc996f3f8f43fc348d02a55898e7220b89f76fb1a31fa96c7f","observation_id":"f05ed162-df6e-4b1b-9540-b5e8e96dc771","resolution":{"observed_at":"2026-08-14T13:52:25.291478Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.298186Z","title":null,"venue":null,"work_id":null,"year":1966},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":88,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.298186Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:8e457f10c7f7492e971419ec273a4fe7a89a2ad802d4215c15c5c20228cdb83f","observation_id":"057bec91-25f1-427d-96d6-66e9a7bf5d0e","resolution":{"observed_at":"2026-08-14T13:52:25.298186Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.305363Z","title":"2011, , 410, 166","venue":null,"work_id":null,"year":2011},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":89,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.305363Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:d1a81f2fdbb45617fd67836f0c5a449f83610b3f61a0e41fc02811109adc31b4","observation_id":"13efdbee-d29e-4e11-87a3-b41a1b36a651","resolution":{"observed_at":"2026-08-14T13:52:25.305363Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.107172Z","title":"& Rees , M","venue":null,"work_id":"dbc81e6d-840a-488f-917b-c3c93a7d4898","year":1971},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":90,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.312989Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:0c44519406aa1eecd6842489c1857726814ef633271934e8e7e546add74e760d","observation_id":"354e2246-ce0e-43db-9a4f-dcfd843df57a","resolution":{"observed_at":"2026-08-14T13:52:27.115102Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.085530Z","title":"E., Puerari , I., Rosales-Ortega , F","venue":null,"work_id":"e30d38b4-07ac-411f-9858-59cfc69cb68c","year":2014},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":91,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.319656Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:cf8aa693e9d66a633a6a7b22e9dc8c62edacd9769e748a44b17f093565f1e3c3","observation_id":"abac72e5-d1bf-4721-b01b-a59b5a8c88f6","resolution":{"observed_at":"2026-08-14T13:52:27.092731Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1904.11436","last_updated":"2019-04-25T16:19:34Z","snapshot_observed_at":"2026-08-14T16:41:25.455578Z","submitted_at":"2019-04-25T16:19:34Z","title":"Galaxy Zoo: Unwinding the Winding Problem - Observations of Spiral Bulge Prominence and Arm Pitch Angles Suggest Local Spiral Galaxies are Winding","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1904.11436","snapshot_observed_at":"2026-08-14T13:52:25.368784Z","title":"L., Lintott , C","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":92,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.368784Z"},"links":{"cited_paper":"/paper/1904.11436","citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:16f67b8f980bc65afe7858330485e462376d01fdb0ea989de654702a7f778e70","observation_id":"856cd2a0-59ce-4dca-b9b6-6bf03c127f7a","resolution":{"observed_at":"2026-08-14T13:52:25.368784Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.375218Z","title":"2011, , 527, A147","venue":null,"work_id":null,"year":2011},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":93,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.375218Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:da4156aac9237d8c78a2c8000da144e5fc70697434a3e15059a78e9f43450725","observation_id":"43589b19-b3c9-490a-942e-ae49359c09d8","resolution":{"observed_at":"2026-08-14T13:52:25.375218Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:25.381784Z","title":"P., Somerville , R","venue":null,"work_id":null,"year":2010},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":94,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.381784Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:c6134e0a4c1ad244a7586bfdb2019626183b38503672eaa9daf7da88a7225cb1","observation_id":"a73c1ba4-f8d6-4a09-8136-60af2ac112e7","resolution":{"observed_at":"2026-08-14T13:52:25.381784Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.033585Z","title":"C., Sheth , K., Regan , M., et al","venue":null,"work_id":"a04fd4c2-7592-4ba7-8523-4298c551eea0","year":2015},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":95,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.388092Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:5e7b9ac48a62dcb3b2f3a97a5202e261b845c052978d8b4de2cac0c26ac002c8","observation_id":"2189c9c2-c80b-46ff-bd94-60882cbc376b","resolution":{"observed_at":"2026-08-14T13:52:27.040511Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:27.016052Z","title":null,"venue":null,"work_id":"fd0df553-6e6a-445b-810e-1f4e7c58a636","year":2006},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":96,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.395004Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:0e3fabae2c2d642bc80163991ce568ccb2e5bbc3643ebbda38cfcb1f7dab0ef5","observation_id":"de96db9f-abe0-43bc-8b8f-ab02beb2d410","resolution":{"observed_at":"2026-08-14T13:52:27.022206Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:26.997713Z","title":"2016, , 827, L2","venue":null,"work_id":"4849ba6d-951c-4a93-ac7a-e70fc58fe8e4","year":2016},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":97,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.401766Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:4d881bc54faeb789e5f4a76e15a85ffbd2218817c2b354a304844c646e4ba871","observation_id":"fd510e85-3b51-4ae3-935a-c70a45335021","resolution":{"observed_at":"2026-08-14T13:52:27.003805Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:26.976315Z","title":"L., Elmegreen , B","venue":null,"work_id":"f97ef40a-1c21-4ce5-acce-8e5916a71fab","year":2000},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":98,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.407251Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:661ff28c97f7e531f09b40deb2e6dcdc350aa1c049173ee20167aef989dc8776","observation_id":"8f0b97d4-fd9e-44a1-8c0b-cedd182ba66c","resolution":{"observed_at":"2026-08-14T13:52:26.983740Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:26.794776Z","title":"& Dottori , H","venue":null,"work_id":"93f8f669-f4ee-48a7-b355-af429a546a4c","year":1992},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":99,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.412867Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:c3a4a86f83d22c701b2b69071fa76ead5662365c3eeb85f71f5721df7e3b4151","observation_id":"023195b8-6e6f-4acc-8ff4-20f108d003cb","resolution":{"observed_at":"2026-08-14T13:52:26.800407Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T13:52:26.775028Z","title":"G., & Block , D","venue":null,"work_id":"bcbd428b-a51d-4cf1-8e61-320697cbb65a","year":2014},"citing_paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars","version":3},"reference_index":100,"source":"arxiv_source","source_observed_at":"2026-08-14T13:52:25.419522Z"},"links":{"citing_paper":"/paper/1908.04246"},"observation_digest":"sha256:ba3480b639c3cda240cce2b71a3edc85a43c0e6dea461877e54cbfc87bfef128","observation_id":"0a5d83d5-266e-45c4-b0a5-be27fb48acb2","resolution":{"observed_at":"2026-08-14T13:52:26.780493Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}}],"paper":{"arxiv_id":"1908.04246","last_updated":"2019-10-14T19:38:02Z","latest_version":3,"primary_category":"astro-ph.GA","snapshot_observed_at":"2026-08-16T05:21:18.732281Z","submitted_at":"2019-08-12T16:53:49Z","title":"The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars"},"reference_resolution":{"displayed":100,"state_counts":{"malformed_identifier":0,"metadata_mismatch":1,"parse_uncertain":0,"unresolved":83,"verified_exact":0,"verified_fuzzy":16},"total_outbound_references":147},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"thesis":"As of 16 August 2026, this Paper Citation Record lists 100 of 147 outbound references and 0 inbound Pith citation observations for arXiv:1908.04246."}