{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:J37D3WH2EORIERJ3WZXN5CG7L2","short_pith_number":"pith:J37D3WH2","schema_version":"1.0","canonical_sha256":"4efe3dd8fa23a282453bb66ede88df5e9e29c66b54146d541fd53af9c2acadbe","source":{"kind":"arxiv","id":"2110.06971","version":1},"attestation_state":"computed","paper":{"title":"AstraeusIV : Quantifying the star formation histories of galaxies in the Epoch of Reionization","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Anne Hutter, Graziano Ucci, Gustavo Yepes, Laurent Legrand, Pratika Dayal, Stefan Gottl\\\"ober","submitted_at":"2021-10-13T18:20:52Z","abstract_excerpt":"We use the \\textsc{astraeus} framework, that couples an N-body simulation with a semi-analytic model for galaxy formation and a semi-numerical model for reionization, to quantify the star formation histories (SFHs) of galaxies in the first billion years. Exploring four models of radiative feedback, we fit the SFH of each galaxy at $z>5$ as $\\mathrm{log}(\\mathrm{SFR}(z))=-\\alpha(1 + z)+\\beta$; star formation is deemed stochastic if it deviates from this fit by more than $\\Delta_\\mathrm{SFR}=0.6\\,$dex. Our key findings are: (i) The fraction of stellar mass formed and time spent in the stochastic"},"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":"2110.06971","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-10-13T18:20:52Z","cross_cats_sorted":[],"title_canon_sha256":"e4fde3fcdc3733a11a70e5db3bdf755a4d754bebd0febe0106bd0b8e8de70496","abstract_canon_sha256":"a00c04c1b1f8ed48c0db3ff1bc49837a7b8344d250c8c93a849ae009b7e9d5fb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:28:27.871871Z","signature_b64":"9j0A2WTH8wULfZw5DHlcrx49bLphCteKV2zWUY+R+BQQIHpUS9xCEz0X5hqRAToiJFaSYo/uHndtmxP+pAorBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4efe3dd8fa23a282453bb66ede88df5e9e29c66b54146d541fd53af9c2acadbe","last_reissued_at":"2026-07-05T03:28:27.871441Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:28:27.871441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"AstraeusIV : Quantifying the star formation histories of galaxies in the Epoch of Reionization","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Anne Hutter, Graziano Ucci, Gustavo Yepes, Laurent Legrand, Pratika Dayal, Stefan Gottl\\\"ober","submitted_at":"2021-10-13T18:20:52Z","abstract_excerpt":"We use the \\textsc{astraeus} framework, that couples an N-body simulation with a semi-analytic model for galaxy formation and a semi-numerical model for reionization, to quantify the star formation histories (SFHs) of galaxies in the first billion years. Exploring four models of radiative feedback, we fit the SFH of each galaxy at $z>5$ as $\\mathrm{log}(\\mathrm{SFR}(z))=-\\alpha(1 + z)+\\beta$; star formation is deemed stochastic if it deviates from this fit by more than $\\Delta_\\mathrm{SFR}=0.6\\,$dex. Our key findings are: (i) The fraction of stellar mass formed and time spent in the stochastic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.06971","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/2110.06971/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":"2110.06971","created_at":"2026-07-05T03:28:27.871490+00:00"},{"alias_kind":"arxiv_version","alias_value":"2110.06971v1","created_at":"2026-07-05T03:28:27.871490+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.06971","created_at":"2026-07-05T03:28:27.871490+00:00"},{"alias_kind":"pith_short_12","alias_value":"J37D3WH2EORI","created_at":"2026-07-05T03:28:27.871490+00:00"},{"alias_kind":"pith_short_16","alias_value":"J37D3WH2EORIERJ3","created_at":"2026-07-05T03:28:27.871490+00:00"},{"alias_kind":"pith_short_8","alias_value":"J37D3WH2","created_at":"2026-07-05T03:28:27.871490+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/J37D3WH2EORIERJ3WZXN5CG7L2","json":"https://pith.science/pith/J37D3WH2EORIERJ3WZXN5CG7L2.json","graph_json":"https://pith.science/api/pith-number/J37D3WH2EORIERJ3WZXN5CG7L2/graph.json","events_json":"https://pith.science/api/pith-number/J37D3WH2EORIERJ3WZXN5CG7L2/events.json","paper":"https://pith.science/paper/J37D3WH2"},"agent_actions":{"view_html":"https://pith.science/pith/J37D3WH2EORIERJ3WZXN5CG7L2","download_json":"https://pith.science/pith/J37D3WH2EORIERJ3WZXN5CG7L2.json","view_paper":"https://pith.science/paper/J37D3WH2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2110.06971&json=true","fetch_graph":"https://pith.science/api/pith-number/J37D3WH2EORIERJ3WZXN5CG7L2/graph.json","fetch_events":"https://pith.science/api/pith-number/J37D3WH2EORIERJ3WZXN5CG7L2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/J37D3WH2EORIERJ3WZXN5CG7L2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/J37D3WH2EORIERJ3WZXN5CG7L2/action/storage_attestation","attest_author":"https://pith.science/pith/J37D3WH2EORIERJ3WZXN5CG7L2/action/author_attestation","sign_citation":"https://pith.science/pith/J37D3WH2EORIERJ3WZXN5CG7L2/action/citation_signature","submit_replication":"https://pith.science/pith/J37D3WH2EORIERJ3WZXN5CG7L2/action/replication_record"}},"created_at":"2026-07-05T03:28:27.871490+00:00","updated_at":"2026-07-05T03:28:27.871490+00:00"}