{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:SQRWK4OU5MPPDCQ3O7JSUPGEIL","short_pith_number":"pith:SQRWK4OU","schema_version":"1.0","canonical_sha256":"94236571d4eb1ef18a1b77d32a3cc442e291cb7d8ecdf50a320622218999b22b","source":{"kind":"arxiv","id":"0904.2180","version":1},"attestation_state":"computed","paper":{"title":"The evolution of the mass-metallicity relation in galaxies of different morphological types","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"4), A. Pipino (2), C. Chiappini (3, F. Calura (1), F. Matteucci (1, Italy), Italy; (2) University of Southern California, Italy; (5) INAF-Oss. di Roma, R. Maiolino (5) - ((1) Univ. Trieste, Switzerland; (4) INAF-Oss. di Trieste, USA; (3) Obs. de Geneve","submitted_at":"2009-04-14T20:16:30Z","abstract_excerpt":"By means of chemical evolution models for ellipticals, spirals and irregular galaxies, we aim at investigating the physical meaning and the redshift evolution of the mass-metallicity relation as well as how this relation is connected with galaxy morphology. {abridged} We assume that galaxy morphologies do not change with cosmic time. We present a method to account for a spread in the epochs of galaxy formation and to refine the galactic mass grid. (abridged) We compare our predictions to observational results obtained for galaxies between redshifts 0.07 and 3.5. We reproduce the mass-metallici"},"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":"0904.2180","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-04-14T20:16:30Z","cross_cats_sorted":[],"title_canon_sha256":"a061c9b66fdc95471c6c2ae1e69d443f4425535f297d472e78cc3865464bdc2d","abstract_canon_sha256":"a85bf1842fb4a1932364afc0712ed0a21bcb17f81770790d22fe0e3b5d639479"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:00.497978Z","signature_b64":"lFEIgBHcsTawlJxQUx9sDZxKztwy0xDkTLlWvtddbWY2WrzD7ssphdL9iVrNvomkHzmpNltwl1UHlJU0i1ERBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"94236571d4eb1ef18a1b77d32a3cc442e291cb7d8ecdf50a320622218999b22b","last_reissued_at":"2026-05-18T02:14:00.497276Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:00.497276Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The evolution of the mass-metallicity relation in galaxies of different morphological types","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"4), A. Pipino (2), C. Chiappini (3, F. Calura (1), F. Matteucci (1, Italy), Italy; (2) University of Southern California, Italy; (5) INAF-Oss. di Roma, R. Maiolino (5) - ((1) Univ. Trieste, Switzerland; (4) INAF-Oss. di Trieste, USA; (3) Obs. de Geneve","submitted_at":"2009-04-14T20:16:30Z","abstract_excerpt":"By means of chemical evolution models for ellipticals, spirals and irregular galaxies, we aim at investigating the physical meaning and the redshift evolution of the mass-metallicity relation as well as how this relation is connected with galaxy morphology. {abridged} We assume that galaxy morphologies do not change with cosmic time. We present a method to account for a spread in the epochs of galaxy formation and to refine the galactic mass grid. (abridged) We compare our predictions to observational results obtained for galaxies between redshifts 0.07 and 3.5. We reproduce the mass-metallici"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.2180","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":""},"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":"0904.2180","created_at":"2026-05-18T02:14:00.497418+00:00"},{"alias_kind":"arxiv_version","alias_value":"0904.2180v1","created_at":"2026-05-18T02:14:00.497418+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.2180","created_at":"2026-05-18T02:14:00.497418+00:00"},{"alias_kind":"pith_short_12","alias_value":"SQRWK4OU5MPP","created_at":"2026-05-18T12:26:01.383474+00:00"},{"alias_kind":"pith_short_16","alias_value":"SQRWK4OU5MPPDCQ3","created_at":"2026-05-18T12:26:01.383474+00:00"},{"alias_kind":"pith_short_8","alias_value":"SQRWK4OU","created_at":"2026-05-18T12:26:01.383474+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/SQRWK4OU5MPPDCQ3O7JSUPGEIL","json":"https://pith.science/pith/SQRWK4OU5MPPDCQ3O7JSUPGEIL.json","graph_json":"https://pith.science/api/pith-number/SQRWK4OU5MPPDCQ3O7JSUPGEIL/graph.json","events_json":"https://pith.science/api/pith-number/SQRWK4OU5MPPDCQ3O7JSUPGEIL/events.json","paper":"https://pith.science/paper/SQRWK4OU"},"agent_actions":{"view_html":"https://pith.science/pith/SQRWK4OU5MPPDCQ3O7JSUPGEIL","download_json":"https://pith.science/pith/SQRWK4OU5MPPDCQ3O7JSUPGEIL.json","view_paper":"https://pith.science/paper/SQRWK4OU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0904.2180&json=true","fetch_graph":"https://pith.science/api/pith-number/SQRWK4OU5MPPDCQ3O7JSUPGEIL/graph.json","fetch_events":"https://pith.science/api/pith-number/SQRWK4OU5MPPDCQ3O7JSUPGEIL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SQRWK4OU5MPPDCQ3O7JSUPGEIL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SQRWK4OU5MPPDCQ3O7JSUPGEIL/action/storage_attestation","attest_author":"https://pith.science/pith/SQRWK4OU5MPPDCQ3O7JSUPGEIL/action/author_attestation","sign_citation":"https://pith.science/pith/SQRWK4OU5MPPDCQ3O7JSUPGEIL/action/citation_signature","submit_replication":"https://pith.science/pith/SQRWK4OU5MPPDCQ3O7JSUPGEIL/action/replication_record"}},"created_at":"2026-05-18T02:14:00.497418+00:00","updated_at":"2026-05-18T02:14:00.497418+00:00"}