{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:FPRIGNH37XQDLGIKJBAWRWMIFL","short_pith_number":"pith:FPRIGNH3","schema_version":"1.0","canonical_sha256":"2be28334fbfde035990a484168d9882aeca6197ebb0348bce5c7c21c2fd2ee43","source":{"kind":"arxiv","id":"2307.08911","version":1},"attestation_state":"computed","paper":{"title":"The Origin of Massive Compact Galaxies: Lessons from IllustrisTNG","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Schnorr-M\\\"uller, F. S. Lohmann, K. Slodkowski Clerici, M. Trevisan, T. V. Ricci","submitted_at":"2023-07-18T01:06:10Z","abstract_excerpt":"We investigate the formation and evolution of z=0 massive compact galaxies (MCGs) in the IllustrisTNG cosmological simulation. We found that, as in observations, MCGs are mainly old (median age $\\sim 10.8$ Gyr), have super-solar metallicities (median $\\log Z/Z_{\\odot}\\sim0.35$) and are $\\alpha$-enhanced (median $[\\alpha/Fe]\\sim0.25$). The age distribution extends to younger ages, however, and a few MCGs are as young as $\\sim7$ Gyr. In general, MCGs assemble their mass early and accrete low angular momentum gas, significantly increasing their mass while growing their size much slower. A small f"},"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":"2307.08911","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-07-18T01:06:10Z","cross_cats_sorted":[],"title_canon_sha256":"0ce9fb79829515bd4e9511f6aa603c28c0e2fac5f1e49d9610cecb5ce1b73754","abstract_canon_sha256":"35572e9f784cf767e8262b9dd83d6a656ae3ffe5d1975e529aa1109990a25320"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:34:39.650243Z","signature_b64":"jox9C67I6ec1e4dYUup3rnfYWZuSCT7j0A5q5tJEkEowyLmjXBPToKcRXC7KtYgECg9KrP9lkQpkPuaSHaKWBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2be28334fbfde035990a484168d9882aeca6197ebb0348bce5c7c21c2fd2ee43","last_reissued_at":"2026-07-05T06:34:39.649670Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:34:39.649670Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Origin of Massive Compact Galaxies: Lessons from IllustrisTNG","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Schnorr-M\\\"uller, F. S. Lohmann, K. Slodkowski Clerici, M. Trevisan, T. V. Ricci","submitted_at":"2023-07-18T01:06:10Z","abstract_excerpt":"We investigate the formation and evolution of z=0 massive compact galaxies (MCGs) in the IllustrisTNG cosmological simulation. We found that, as in observations, MCGs are mainly old (median age $\\sim 10.8$ Gyr), have super-solar metallicities (median $\\log Z/Z_{\\odot}\\sim0.35$) and are $\\alpha$-enhanced (median $[\\alpha/Fe]\\sim0.25$). The age distribution extends to younger ages, however, and a few MCGs are as young as $\\sim7$ Gyr. In general, MCGs assemble their mass early and accrete low angular momentum gas, significantly increasing their mass while growing their size much slower. A small f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.08911","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/2307.08911/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":"2307.08911","created_at":"2026-07-05T06:34:39.649744+00:00"},{"alias_kind":"arxiv_version","alias_value":"2307.08911v1","created_at":"2026-07-05T06:34:39.649744+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.08911","created_at":"2026-07-05T06:34:39.649744+00:00"},{"alias_kind":"pith_short_12","alias_value":"FPRIGNH37XQD","created_at":"2026-07-05T06:34:39.649744+00:00"},{"alias_kind":"pith_short_16","alias_value":"FPRIGNH37XQDLGIK","created_at":"2026-07-05T06:34:39.649744+00:00"},{"alias_kind":"pith_short_8","alias_value":"FPRIGNH3","created_at":"2026-07-05T06:34:39.649744+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2505.11048","citing_title":"Revisiting the bimodality of galactic habitability in IllustrisTNG","ref_index":5279,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/FPRIGNH37XQDLGIKJBAWRWMIFL","json":"https://pith.science/pith/FPRIGNH37XQDLGIKJBAWRWMIFL.json","graph_json":"https://pith.science/api/pith-number/FPRIGNH37XQDLGIKJBAWRWMIFL/graph.json","events_json":"https://pith.science/api/pith-number/FPRIGNH37XQDLGIKJBAWRWMIFL/events.json","paper":"https://pith.science/paper/FPRIGNH3"},"agent_actions":{"view_html":"https://pith.science/pith/FPRIGNH37XQDLGIKJBAWRWMIFL","download_json":"https://pith.science/pith/FPRIGNH37XQDLGIKJBAWRWMIFL.json","view_paper":"https://pith.science/paper/FPRIGNH3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2307.08911&json=true","fetch_graph":"https://pith.science/api/pith-number/FPRIGNH37XQDLGIKJBAWRWMIFL/graph.json","fetch_events":"https://pith.science/api/pith-number/FPRIGNH37XQDLGIKJBAWRWMIFL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FPRIGNH37XQDLGIKJBAWRWMIFL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FPRIGNH37XQDLGIKJBAWRWMIFL/action/storage_attestation","attest_author":"https://pith.science/pith/FPRIGNH37XQDLGIKJBAWRWMIFL/action/author_attestation","sign_citation":"https://pith.science/pith/FPRIGNH37XQDLGIKJBAWRWMIFL/action/citation_signature","submit_replication":"https://pith.science/pith/FPRIGNH37XQDLGIKJBAWRWMIFL/action/replication_record"}},"created_at":"2026-07-05T06:34:39.649744+00:00","updated_at":"2026-07-05T06:34:39.649744+00:00"}