{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:3EYFZ6IUB6NFGH35RK7H4435DH","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":"6810f3e53240d47c877c4f2ff1c7f73c8b55f63dcd96159e431165db187f83a5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-17T01:12:50Z","title_canon_sha256":"6e266ba1e55ac2f2a2d3abe6364345c1bb0fbdcedb3a1c06958c3e4f33821f13"},"schema_version":"1.0","source":{"id":"1205.3835","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3835","created_at":"2026-05-18T03:32:28Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3835v2","created_at":"2026-05-18T03:32:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3835","created_at":"2026-05-18T03:32:28Z"},{"alias_kind":"pith_short_12","alias_value":"3EYFZ6IUB6NF","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"3EYFZ6IUB6NFGH35","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"3EYFZ6IU","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:a31d5815289d4e0388c6857a007e866fbaa226f45cc993facfadbbbb9dd6729a","target":"graph","created_at":"2026-05-18T03:32:28Z","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":"We investigate the process of metal-free star formation in the first galaxies with a high-resolution cosmological simulation. We consider the cosmologically motivated scenario in which a strong molecule-destroying Lyman-Werner (LW) background inhibits effective cooling in low-mass haloes, delaying star formation until the collapse or more massive haloes. Only when molecular hydrogen (H2) can self-shield from LW radiation, which requires a halo capable of cooling by atomic line emission, will star formation be possible. To follow the formation of multiple gravitationally bound objects, at high ","authors_text":"Anshu Dubey, Chalence Safranek-Shrader, Christoph Federrath, Meghann Agarwal, Milos Milosavljevic, Volker Bromm","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-17T01:12:50Z","title":"Star Formation in the First Galaxies I: Collapse Delayed by Lyman-Werner Radiation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3835","kind":"arxiv","version":2},"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:ce87810e89e5a0d59068c4ef9dbb4f2df556123ee21e772f02c10db50554f429","target":"record","created_at":"2026-05-18T03:32:28Z","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":"6810f3e53240d47c877c4f2ff1c7f73c8b55f63dcd96159e431165db187f83a5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-17T01:12:50Z","title_canon_sha256":"6e266ba1e55ac2f2a2d3abe6364345c1bb0fbdcedb3a1c06958c3e4f33821f13"},"schema_version":"1.0","source":{"id":"1205.3835","kind":"arxiv","version":2}},"canonical_sha256":"d9305cf9140f9a531f7d8abe7e737d19d26805f0b61d8d7eeeec29a74f7f0d66","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d9305cf9140f9a531f7d8abe7e737d19d26805f0b61d8d7eeeec29a74f7f0d66","first_computed_at":"2026-05-18T03:32:28.503642Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:32:28.503642Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NAjSVO54ANbPP7l0JWDlauNlsOHMOT76VQiRGRcp/08JCEyLI3a9zljWjOkrpd3Io7+B4CeHdtNnW3dx7JW9Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:32:28.504144Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.3835","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce87810e89e5a0d59068c4ef9dbb4f2df556123ee21e772f02c10db50554f429","sha256:a31d5815289d4e0388c6857a007e866fbaa226f45cc993facfadbbbb9dd6729a"],"state_sha256":"52c4a7c12b380ec3880b26af9fd941aa68245faf611ad2616a70f41cd79161c1"}