{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:PKNPRY34O2GSYGOTYOC4JJZQBC","short_pith_number":"pith:PKNPRY34","schema_version":"1.0","canonical_sha256":"7a9af8e37c768d2c19d3c385c4a73008b3e8d7391f7b4bcc0bfed535fb96fc7f","source":{"kind":"arxiv","id":"2201.08855","version":1},"attestation_state":"computed","paper":{"title":"Extremely massive disc galaxies in the nearby Universe form through gas-rich minor mergers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"E. A. Noakes-Kettel, G. Martin, J. E. G. Devriendt, J. Silk, P. Ogle, R. A. Jackson, S. Kaviraj, Y. Dubois","submitted_at":"2022-01-21T19:00:01Z","abstract_excerpt":"In our hierarchical structure-formation paradigm, the observed morphological evolution of massive galaxies -- from rotationally-supported discs to dispersion-dominated spheroids -- is largely explained via galaxy merging. However, since mergers are likely to destroy discs, and the most massive galaxies have the richest merger histories, it is surprising that any discs exist at all at the highest stellar masses. Recent theoretical work by our group has used a cosmological, hydrodynamical simulation to suggest that extremely massive (M* > 10^11.4 MSun) discs form primarily via minor mergers betw"},"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":"2201.08855","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-01-21T19:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"9d8d534c2095de25fe8530a18125caeb0cb8feef0a8be460ad097cbbbf7cfdb9","abstract_canon_sha256":"f1d4a89b6227c6f68d978477eafc06cc267616ae2ee3bcf3ba2bdc12b838ded2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:50:37.634287Z","signature_b64":"QBjVHCGXh1AAPjS84c6F2Ub/ZE8hUKY1wgant4URnvK8YyXxh2DOMmbreSJ9AA7WfmTzQ7AsiVaNXAxSjzXCCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a9af8e37c768d2c19d3c385c4a73008b3e8d7391f7b4bcc0bfed535fb96fc7f","last_reissued_at":"2026-07-05T03:50:37.633854Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:50:37.633854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Extremely massive disc galaxies in the nearby Universe form through gas-rich minor mergers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"E. A. Noakes-Kettel, G. Martin, J. E. G. Devriendt, J. Silk, P. Ogle, R. A. Jackson, S. Kaviraj, Y. Dubois","submitted_at":"2022-01-21T19:00:01Z","abstract_excerpt":"In our hierarchical structure-formation paradigm, the observed morphological evolution of massive galaxies -- from rotationally-supported discs to dispersion-dominated spheroids -- is largely explained via galaxy merging. However, since mergers are likely to destroy discs, and the most massive galaxies have the richest merger histories, it is surprising that any discs exist at all at the highest stellar masses. Recent theoretical work by our group has used a cosmological, hydrodynamical simulation to suggest that extremely massive (M* > 10^11.4 MSun) discs form primarily via minor mergers betw"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.08855","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/2201.08855/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":"2201.08855","created_at":"2026-07-05T03:50:37.633915+00:00"},{"alias_kind":"arxiv_version","alias_value":"2201.08855v1","created_at":"2026-07-05T03:50:37.633915+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.08855","created_at":"2026-07-05T03:50:37.633915+00:00"},{"alias_kind":"pith_short_12","alias_value":"PKNPRY34O2GS","created_at":"2026-07-05T03:50:37.633915+00:00"},{"alias_kind":"pith_short_16","alias_value":"PKNPRY34O2GSYGOT","created_at":"2026-07-05T03:50:37.633915+00:00"},{"alias_kind":"pith_short_8","alias_value":"PKNPRY34","created_at":"2026-07-05T03:50:37.633915+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/PKNPRY34O2GSYGOTYOC4JJZQBC","json":"https://pith.science/pith/PKNPRY34O2GSYGOTYOC4JJZQBC.json","graph_json":"https://pith.science/api/pith-number/PKNPRY34O2GSYGOTYOC4JJZQBC/graph.json","events_json":"https://pith.science/api/pith-number/PKNPRY34O2GSYGOTYOC4JJZQBC/events.json","paper":"https://pith.science/paper/PKNPRY34"},"agent_actions":{"view_html":"https://pith.science/pith/PKNPRY34O2GSYGOTYOC4JJZQBC","download_json":"https://pith.science/pith/PKNPRY34O2GSYGOTYOC4JJZQBC.json","view_paper":"https://pith.science/paper/PKNPRY34","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2201.08855&json=true","fetch_graph":"https://pith.science/api/pith-number/PKNPRY34O2GSYGOTYOC4JJZQBC/graph.json","fetch_events":"https://pith.science/api/pith-number/PKNPRY34O2GSYGOTYOC4JJZQBC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PKNPRY34O2GSYGOTYOC4JJZQBC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PKNPRY34O2GSYGOTYOC4JJZQBC/action/storage_attestation","attest_author":"https://pith.science/pith/PKNPRY34O2GSYGOTYOC4JJZQBC/action/author_attestation","sign_citation":"https://pith.science/pith/PKNPRY34O2GSYGOTYOC4JJZQBC/action/citation_signature","submit_replication":"https://pith.science/pith/PKNPRY34O2GSYGOTYOC4JJZQBC/action/replication_record"}},"created_at":"2026-07-05T03:50:37.633915+00:00","updated_at":"2026-07-05T03:50:37.633915+00:00"}