{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:FU6QW2T73U3ZJF76OARG5DYOBW","short_pith_number":"pith:FU6QW2T7","schema_version":"1.0","canonical_sha256":"2d3d0b6a7fdd379497fe70226e8f0e0d98d03c48602877560541e6eca36d0c25","source":{"kind":"arxiv","id":"2107.04486","version":1},"attestation_state":"computed","paper":{"title":"Formation of an ultra-diffuse galaxy in the stellar filaments of NGC3314A: caught in act?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Antonio La Marca, Chiara Spiniello, Duncan A. Forbes, Enrichetta Iodice, Giuseppe D'Ago, Laura Greggio, Magda Arnaboldi, Marco Gullieuszik, Marilena Spavone, Marina Rejkuba, Maurizio Paolillo, Michael Hilker, Michele Cantiello, Pietro Schipani, Roberto Rampazzo, Steffen Mieske","submitted_at":"2021-07-09T15:21:27Z","abstract_excerpt":"The VEGAS imaging survey of the Hydra I cluster reveals an extended network of stellar filaments to the south-west of the spiral galaxy NGC3314A. Within these filaments, at a projected distance of ~40 kpc from the galaxy, we discover an ultra-diffuse galaxy (UDG) with a central surface brightness of $\\mu_{0,g}\\sim26$ mag arcsec$^{-2}$ and effective radius $R_e\\sim3.8$ kpc. This UDG, named UDG32, is one of the faintest and most diffuse low-surface brightness galaxies in the Hydra~I cluster. Based on the available data, we cannot exclude that this object is just seen in projection on top of the "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2107.04486","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-07-09T15:21:27Z","cross_cats_sorted":[],"title_canon_sha256":"cf847d819fb67a3d36d674140ead2190d3af8840cdcbc3c808a6815b9c62612b","abstract_canon_sha256":"bc528224b601665291c4040bf2b42cc1c3efae07f83111367c730b9c4a002433"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:08:35.459503Z","signature_b64":"XHosQJK9HgLVyXicigKPzSmu5NeC+cRnM7gD1bHNtXGSUYLNCYruxBMKrJUBTH1424S/heU2NKWAdEVJRfpACg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2d3d0b6a7fdd379497fe70226e8f0e0d98d03c48602877560541e6eca36d0c25","last_reissued_at":"2026-07-05T03:08:35.459088Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:08:35.459088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Formation of an ultra-diffuse galaxy in the stellar filaments of NGC3314A: caught in act?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Antonio La Marca, Chiara Spiniello, Duncan A. Forbes, Enrichetta Iodice, Giuseppe D'Ago, Laura Greggio, Magda Arnaboldi, Marco Gullieuszik, Marilena Spavone, Marina Rejkuba, Maurizio Paolillo, Michael Hilker, Michele Cantiello, Pietro Schipani, Roberto Rampazzo, Steffen Mieske","submitted_at":"2021-07-09T15:21:27Z","abstract_excerpt":"The VEGAS imaging survey of the Hydra I cluster reveals an extended network of stellar filaments to the south-west of the spiral galaxy NGC3314A. Within these filaments, at a projected distance of ~40 kpc from the galaxy, we discover an ultra-diffuse galaxy (UDG) with a central surface brightness of $\\mu_{0,g}\\sim26$ mag arcsec$^{-2}$ and effective radius $R_e\\sim3.8$ kpc. This UDG, named UDG32, is one of the faintest and most diffuse low-surface brightness galaxies in the Hydra~I cluster. Based on the available data, we cannot exclude that this object is just seen in projection on top of the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.04486","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2107.04486/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2107.04486","created_at":"2026-07-05T03:08:35.459143+00:00"},{"alias_kind":"arxiv_version","alias_value":"2107.04486v1","created_at":"2026-07-05T03:08:35.459143+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.04486","created_at":"2026-07-05T03:08:35.459143+00:00"},{"alias_kind":"pith_short_12","alias_value":"FU6QW2T73U3Z","created_at":"2026-07-05T03:08:35.459143+00:00"},{"alias_kind":"pith_short_16","alias_value":"FU6QW2T73U3ZJF76","created_at":"2026-07-05T03:08:35.459143+00:00"},{"alias_kind":"pith_short_8","alias_value":"FU6QW2T7","created_at":"2026-07-05T03:08:35.459143+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/FU6QW2T73U3ZJF76OARG5DYOBW","json":"https://pith.science/pith/FU6QW2T73U3ZJF76OARG5DYOBW.json","graph_json":"https://pith.science/api/pith-number/FU6QW2T73U3ZJF76OARG5DYOBW/graph.json","events_json":"https://pith.science/api/pith-number/FU6QW2T73U3ZJF76OARG5DYOBW/events.json","paper":"https://pith.science/paper/FU6QW2T7"},"agent_actions":{"view_html":"https://pith.science/pith/FU6QW2T73U3ZJF76OARG5DYOBW","download_json":"https://pith.science/pith/FU6QW2T73U3ZJF76OARG5DYOBW.json","view_paper":"https://pith.science/paper/FU6QW2T7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2107.04486&json=true","fetch_graph":"https://pith.science/api/pith-number/FU6QW2T73U3ZJF76OARG5DYOBW/graph.json","fetch_events":"https://pith.science/api/pith-number/FU6QW2T73U3ZJF76OARG5DYOBW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FU6QW2T73U3ZJF76OARG5DYOBW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FU6QW2T73U3ZJF76OARG5DYOBW/action/storage_attestation","attest_author":"https://pith.science/pith/FU6QW2T73U3ZJF76OARG5DYOBW/action/author_attestation","sign_citation":"https://pith.science/pith/FU6QW2T73U3ZJF76OARG5DYOBW/action/citation_signature","submit_replication":"https://pith.science/pith/FU6QW2T73U3ZJF76OARG5DYOBW/action/replication_record"}},"created_at":"2026-07-05T03:08:35.459143+00:00","updated_at":"2026-07-05T03:08:35.459143+00:00"}