{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:IF4XZUNTB2WY7NB24324BR7WSP","short_pith_number":"pith:IF4XZUNT","schema_version":"1.0","canonical_sha256":"41797cd1b30ead8fb43ae6f5c0c7f693ec068010180aa3dfedc47f80a733777b","source":{"kind":"arxiv","id":"1402.3296","version":2},"attestation_state":"computed","paper":{"title":"Chemo-Archaeological Downsizing in a Hierarchical Universe: Impact of a Top Heavy IGIMF","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"A. A. Orsi, A. M. Mu\\~noz Arancibia, A. N. Ruiz, C. Weidner, G. Bruzual, I. D. Gargiulo, N. D. Padilla, S. A. Cora, T. E. Tecce","submitted_at":"2014-02-13T21:00:15Z","abstract_excerpt":"We make use of a semi-analytical model of galaxy formation to investigate the origin of the observed correlation between [a/Fe] abundance ratios and stellar mass in elliptical galaxies. We implement a new galaxy-wide stellar initial mass function (Top Heavy Integrated Galaxy Initial Mass Function, TH-IGIMF) in the semi-analytic model SAG and evaluate its impact on the chemical evolution of galaxies. The SFR-dependence of the slope of the TH-IGIMF is found to be key to reproducing the correct [a/Fe]-stellar mass relation. Massive galaxies reach higher [a/Fe] abundance ratios because they are ch"},"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":"1402.3296","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-02-13T21:00:15Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"1c28b3208570edbd7f150838876299defd54c3ba9a2f4f915448e2fa307866b0","abstract_canon_sha256":"ae7e206928c91bc1396e7df553d0f3d5a2355716f9305d91dadb3b71d53b6f1c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:44:38.347949Z","signature_b64":"qED2cUn+Jwl/WnfQ5xQQ8ORfbxvBdKf9qgdy6k31o4bAX6rvMBdEftcUz6vSdXLu37UudGBw3jGe+Cv1ztxTBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"41797cd1b30ead8fb43ae6f5c0c7f693ec068010180aa3dfedc47f80a733777b","last_reissued_at":"2026-05-18T01:44:38.347275Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:44:38.347275Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Chemo-Archaeological Downsizing in a Hierarchical Universe: Impact of a Top Heavy IGIMF","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"A. A. Orsi, A. M. Mu\\~noz Arancibia, A. N. Ruiz, C. Weidner, G. Bruzual, I. D. Gargiulo, N. D. Padilla, S. A. Cora, T. E. Tecce","submitted_at":"2014-02-13T21:00:15Z","abstract_excerpt":"We make use of a semi-analytical model of galaxy formation to investigate the origin of the observed correlation between [a/Fe] abundance ratios and stellar mass in elliptical galaxies. We implement a new galaxy-wide stellar initial mass function (Top Heavy Integrated Galaxy Initial Mass Function, TH-IGIMF) in the semi-analytic model SAG and evaluate its impact on the chemical evolution of galaxies. The SFR-dependence of the slope of the TH-IGIMF is found to be key to reproducing the correct [a/Fe]-stellar mass relation. Massive galaxies reach higher [a/Fe] abundance ratios because they are ch"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.3296","kind":"arxiv","version":2},"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":"1402.3296","created_at":"2026-05-18T01:44:38.347404+00:00"},{"alias_kind":"arxiv_version","alias_value":"1402.3296v2","created_at":"2026-05-18T01:44:38.347404+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.3296","created_at":"2026-05-18T01:44:38.347404+00:00"},{"alias_kind":"pith_short_12","alias_value":"IF4XZUNTB2WY","created_at":"2026-05-18T12:28:33.132498+00:00"},{"alias_kind":"pith_short_16","alias_value":"IF4XZUNTB2WY7NB2","created_at":"2026-05-18T12:28:33.132498+00:00"},{"alias_kind":"pith_short_8","alias_value":"IF4XZUNT","created_at":"2026-05-18T12:28:33.132498+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2606.10558","citing_title":"Hector Galaxy Survey: Linking the low- and high-mass ends of the initial mass function in star-forming galaxies","ref_index":174,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/IF4XZUNTB2WY7NB24324BR7WSP","json":"https://pith.science/pith/IF4XZUNTB2WY7NB24324BR7WSP.json","graph_json":"https://pith.science/api/pith-number/IF4XZUNTB2WY7NB24324BR7WSP/graph.json","events_json":"https://pith.science/api/pith-number/IF4XZUNTB2WY7NB24324BR7WSP/events.json","paper":"https://pith.science/paper/IF4XZUNT"},"agent_actions":{"view_html":"https://pith.science/pith/IF4XZUNTB2WY7NB24324BR7WSP","download_json":"https://pith.science/pith/IF4XZUNTB2WY7NB24324BR7WSP.json","view_paper":"https://pith.science/paper/IF4XZUNT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1402.3296&json=true","fetch_graph":"https://pith.science/api/pith-number/IF4XZUNTB2WY7NB24324BR7WSP/graph.json","fetch_events":"https://pith.science/api/pith-number/IF4XZUNTB2WY7NB24324BR7WSP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IF4XZUNTB2WY7NB24324BR7WSP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IF4XZUNTB2WY7NB24324BR7WSP/action/storage_attestation","attest_author":"https://pith.science/pith/IF4XZUNTB2WY7NB24324BR7WSP/action/author_attestation","sign_citation":"https://pith.science/pith/IF4XZUNTB2WY7NB24324BR7WSP/action/citation_signature","submit_replication":"https://pith.science/pith/IF4XZUNTB2WY7NB24324BR7WSP/action/replication_record"}},"created_at":"2026-05-18T01:44:38.347404+00:00","updated_at":"2026-05-18T01:44:38.347404+00:00"}