{"as_of":"2026-08-23T18:55:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:4b631208f8c10c06c7a3b8748429785bfdd1ced9a3c054c72bb33afb2e345bca","coverage":[{"denominator":0,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":3,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":3,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-23T06:30:58.430688+00:00","state":"measured"},{"denominator":3,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":3,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-14T04:19:05.576900Z","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":[{"citation":{"cited_paper":{"arxiv_id":"2102.09909","last_updated":"2021-02-19T13:02:36Z","snapshot_observed_at":"2026-08-16T18:44:26.316360Z","submitted_at":"2021-02-19T13:02:36Z","title":"xCOLDGASS and xGASS: Radial metallicity gradients and global properties on the star-forming main sequence","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2102.09909","snapshot_observed_at":"2026-08-02T02:58:16.107403Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2607.14065","last_updated":"2026-07-15T17:36:36Z","snapshot_observed_at":"2026-08-15T20:59:18.314364Z","submitted_at":"2026-07-15T17:36:36Z","title":"The complex stellar system M 22: confirming abundance variations with high precision differential measurements","version":1},"reference_index":129,"source":"arxiv_source","source_observed_at":"2026-08-02T02:58:16.107403Z"},"links":{"cited_paper":"/paper/2102.09909","citing_paper":"/paper/2607.14065"},"observation_digest":"sha256:a315b53661434c17df673a6e1ddc7880dededd456442ef11f400c22b8af0872f","observation_id":"a0560257-94e3-4543-8d3d-647902dd2436","resolution":{"observed_at":"2026-08-02T02:58:16.107403Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2102.09909","last_updated":"2021-02-19T13:02:36Z","snapshot_observed_at":"2026-08-16T18:44:26.316360Z","submitted_at":"2021-02-19T13:02:36Z","title":"xCOLDGASS and xGASS: Radial metallicity gradients and global properties on the star-forming main sequence","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2102.09909","snapshot_observed_at":"2026-08-02T02:59:19.868863Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2607.14066","last_updated":"2026-07-15T17:36:45Z","snapshot_observed_at":"2026-08-19T04:10:58.568666Z","submitted_at":"2026-07-15T17:36:45Z","title":"The complex stellar system M 22: constraining the chemical enrichment from AGB stars using magnesium isotope ratios","version":1},"reference_index":131,"source":"arxiv_source","source_observed_at":"2026-08-02T02:59:19.868863Z"},"links":{"cited_paper":"/paper/2102.09909","citing_paper":"/paper/2607.14066"},"observation_digest":"sha256:ee324590d333e079d81f157b3c1d5e58b6af36d5df7a2dfdab5cefe0998dd945","observation_id":"be711d8e-b9c1-4b3e-8dda-d3b8fe889d6f","resolution":{"observed_at":"2026-08-02T02:59:19.868863Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2102.09909","last_updated":"2021-02-19T13:02:36Z","snapshot_observed_at":"2026-08-16T18:44:26.316360Z","submitted_at":"2021-02-19T13:02:36Z","title":"xCOLDGASS and xGASS: Radial metallicity gradients and global properties on the star-forming main sequence","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2102.09909","snapshot_observed_at":"2026-08-14T04:19:05.576900Z","title":"arXiv , author =:2102.09909 , journal =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.10070","last_updated":"2026-08-10T18:00:01Z","snapshot_observed_at":"2026-08-15T19:33:47.188484Z","submitted_at":"2026-08-10T18:00:01Z","title":"A cosmic collision in the making: JWST/NIRISS reveals a merging and maturing protocluster core at z~3 around a red quasar","version":1},"reference_index":294,"source":"arxiv_source","source_observed_at":"2026-08-14T04:19:05.576900Z"},"links":{"cited_paper":"/paper/2102.09909","citing_paper":"/paper/2608.10070"},"observation_digest":"sha256:450fa549e0d5b1e7bfab0d79e7aa58a7a405cc4daadb8f475d3118bd0a4068ac","observation_id":"8c945bac-f42a-4607-bc5c-d7abdba79ece","resolution":{"observed_at":"2026-08-14T04:19:05.576900Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"links":{"evidence":"/evidence","html":"/paper/2102.09909/citation-record","integrity":"/paper/2102.09909/integrity","json":"/paper/2102.09909/citation-record.json","paper":"/paper/2102.09909"},"outbound":[],"paper":{"arxiv_id":"2102.09909","last_updated":"2021-02-19T13:02:36Z","latest_version":1,"primary_category":"astro-ph.GA","snapshot_observed_at":"2026-08-16T18:44:26.316360Z","submitted_at":"2021-02-19T13:02:36Z","title":"xCOLDGASS and xGASS: Radial metallicity gradients and global properties on the star-forming main sequence"},"reference_resolution":{"displayed":0,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":0,"verified_exact":0,"verified_fuzzy":0},"total_outbound_references":0},"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":"2026-08-23T06:30:58.430688+00:00","source":"crossref"},{"observed_at":"2026-08-23T06:30:53.778098+00:00","source":"retraction_watch"}],"thesis":"As of 23 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 3 inbound Pith citation observations for arXiv:2102.09909."}