{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:VAUF6JQNBJ6VZNKXWVGPCSZCJL","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"0504830a7ef90077b777dcd410ad45ecb09a0d6c29a2775ee5fdfd76798af068","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-11T12:31:24Z","title_canon_sha256":"b40594269a24cc5078e813b5532c54bffcd101ef31f75d0082b562e961aa0b30"},"schema_version":"1.0","source":{"id":"1011.2632","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.2632","created_at":"2026-05-18T02:04:48Z"},{"alias_kind":"arxiv_version","alias_value":"1011.2632v4","created_at":"2026-05-18T02:04:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.2632","created_at":"2026-05-18T02:04:48Z"},{"alias_kind":"pith_short_12","alias_value":"VAUF6JQNBJ6V","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"VAUF6JQNBJ6VZNKX","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"VAUF6JQN","created_at":"2026-05-18T12:26:15Z"}],"graph_snapshots":[{"event_id":"sha256:337a0c2626ecfe5fc84ab4bcf79e81e9e59d37f2bc3a61865e6f18575690782f","target":"graph","created_at":"2026-05-18T02:04:48Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"By definition, Population III stars are metal-free, and their protostellar collapse is driven by molecular hydrogen cooling in the gas-phase, leading to large characteristic masses. Population II stars with lower characteristic masses form when the star-forming gas reaches a critical metallicity of 10^{-6} - 10^{-3.5} Z_\\odot. We present an adaptive mesh refinement radiation hydrodynamics simulation that follows the transition from Population III to II star formation. The maximum spatial resolution of 1 comoving parsec allows for individual molecular clouds to be well-resolved and their stella","authors_text":"John H. Wise (GA Tech), Matthew J. Turk (Columbia), Michael L. Norman (UCSD), Tom Abel (Stanford)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-11T12:31:24Z","title":"The Birth of a Galaxy: Primordial Metal Enrichment and Stellar Populations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.2632","kind":"arxiv","version":4},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f8925255bc87fdbcc5bc9907a4817a011c803ebcf72ac735c74a266313415d4a","target":"record","created_at":"2026-05-18T02:04:48Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"0504830a7ef90077b777dcd410ad45ecb09a0d6c29a2775ee5fdfd76798af068","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-11T12:31:24Z","title_canon_sha256":"b40594269a24cc5078e813b5532c54bffcd101ef31f75d0082b562e961aa0b30"},"schema_version":"1.0","source":{"id":"1011.2632","kind":"arxiv","version":4}},"canonical_sha256":"a8285f260d0a7d5cb557b54cf14b224afbccfa1ea387a33a30adb0f3f5ea4964","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a8285f260d0a7d5cb557b54cf14b224afbccfa1ea387a33a30adb0f3f5ea4964","first_computed_at":"2026-05-18T02:04:48.889660Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:48.889660Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iRPsVi+yAlroWFjKqFGjDTT6rPxmw+ywpixBJhhD0heDZXO670XVSDaGy4SBuAh36Rh2tbySIBkHaewuDETbCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:48.890518Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.2632","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8925255bc87fdbcc5bc9907a4817a011c803ebcf72ac735c74a266313415d4a","sha256:337a0c2626ecfe5fc84ab4bcf79e81e9e59d37f2bc3a61865e6f18575690782f"],"state_sha256":"1d488f4bbe9837b43f087bda325be0ee4365dd9eb36720d12049b960edd43ee2"}