{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:RRPJN7E2UA5JGGAC54ELXPATTY","short_pith_number":"pith:RRPJN7E2","schema_version":"1.0","canonical_sha256":"8c5e96fc9aa03a931802ef08bbbc139e279b55e0cf041129257896860460613e","source":{"kind":"arxiv","id":"1011.0733","version":2},"attestation_state":"computed","paper":{"title":"A Carbon-enhanced Metal-poor Damped Lyman alpha System: Probing Gas from Population III Nucleosynthesis?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Charles C. Steidel (California Institute of Technology), Gwen C. Rudie (California Institute of Technology), Max Pettini (Institute of Astronomy, Regina A. Jorgenson (Institute of Astronomy, Ryan Cooke (Institute of Astronomy, University of Cambridge)","submitted_at":"2010-11-02T20:00:07Z","abstract_excerpt":"We present high resolution observations of an extremely metal-poor damped Lyman-alpha system, at z_abs = 2.3400972 in the spectrum of the QSO J0035-0918, exhibiting an abundance pattern consistent with model predictions for the supernova yields of Population III stars. Specifically, this DLA has [Fe/H] = -3.04, shows a clear `odd-even' effect, and is C-rich with [C/Fe] = +1.53, a factor of about 20 greater than reported in any other damped Lyman-alpha system. In analogy to the carbon-enhanced metal-poor stars in the Galactic halo (with [C/Fe] > +1.0), this is the first reported case of a carbo"},"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":"1011.0733","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-11-02T20:00:07Z","cross_cats_sorted":[],"title_canon_sha256":"a0cb3e4e0962dca580ec5a01a444d4fbaee2d6579e8d21767ef47994f46d5336","abstract_canon_sha256":"d14c4e40215207f7b92049a9e5265cfe32e51da3aff7e8e06c6f2c8277336215"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:53.501163Z","signature_b64":"yBHsPS+uee0+6SfctBbeMz9y6oeIsWkAr0V2bB3RNDlmm0up8+7+xjDjVW+xADHTMHTS2REjtXpzTV8C1/TqDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8c5e96fc9aa03a931802ef08bbbc139e279b55e0cf041129257896860460613e","last_reissued_at":"2026-05-18T02:04:53.500560Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:53.500560Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Carbon-enhanced Metal-poor Damped Lyman alpha System: Probing Gas from Population III Nucleosynthesis?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Charles C. Steidel (California Institute of Technology), Gwen C. Rudie (California Institute of Technology), Max Pettini (Institute of Astronomy, Regina A. Jorgenson (Institute of Astronomy, Ryan Cooke (Institute of Astronomy, University of Cambridge)","submitted_at":"2010-11-02T20:00:07Z","abstract_excerpt":"We present high resolution observations of an extremely metal-poor damped Lyman-alpha system, at z_abs = 2.3400972 in the spectrum of the QSO J0035-0918, exhibiting an abundance pattern consistent with model predictions for the supernova yields of Population III stars. Specifically, this DLA has [Fe/H] = -3.04, shows a clear `odd-even' effect, and is C-rich with [C/Fe] = +1.53, a factor of about 20 greater than reported in any other damped Lyman-alpha system. In analogy to the carbon-enhanced metal-poor stars in the Galactic halo (with [C/Fe] > +1.0), this is the first reported case of a carbo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.0733","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":"1011.0733","created_at":"2026-05-18T02:04:53.500660+00:00"},{"alias_kind":"arxiv_version","alias_value":"1011.0733v2","created_at":"2026-05-18T02:04:53.500660+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.0733","created_at":"2026-05-18T02:04:53.500660+00:00"},{"alias_kind":"pith_short_12","alias_value":"RRPJN7E2UA5J","created_at":"2026-05-18T12:26:13.927090+00:00"},{"alias_kind":"pith_short_16","alias_value":"RRPJN7E2UA5JGGAC","created_at":"2026-05-18T12:26:13.927090+00:00"},{"alias_kind":"pith_short_8","alias_value":"RRPJN7E2","created_at":"2026-05-18T12:26:13.927090+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/RRPJN7E2UA5JGGAC54ELXPATTY","json":"https://pith.science/pith/RRPJN7E2UA5JGGAC54ELXPATTY.json","graph_json":"https://pith.science/api/pith-number/RRPJN7E2UA5JGGAC54ELXPATTY/graph.json","events_json":"https://pith.science/api/pith-number/RRPJN7E2UA5JGGAC54ELXPATTY/events.json","paper":"https://pith.science/paper/RRPJN7E2"},"agent_actions":{"view_html":"https://pith.science/pith/RRPJN7E2UA5JGGAC54ELXPATTY","download_json":"https://pith.science/pith/RRPJN7E2UA5JGGAC54ELXPATTY.json","view_paper":"https://pith.science/paper/RRPJN7E2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1011.0733&json=true","fetch_graph":"https://pith.science/api/pith-number/RRPJN7E2UA5JGGAC54ELXPATTY/graph.json","fetch_events":"https://pith.science/api/pith-number/RRPJN7E2UA5JGGAC54ELXPATTY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RRPJN7E2UA5JGGAC54ELXPATTY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RRPJN7E2UA5JGGAC54ELXPATTY/action/storage_attestation","attest_author":"https://pith.science/pith/RRPJN7E2UA5JGGAC54ELXPATTY/action/author_attestation","sign_citation":"https://pith.science/pith/RRPJN7E2UA5JGGAC54ELXPATTY/action/citation_signature","submit_replication":"https://pith.science/pith/RRPJN7E2UA5JGGAC54ELXPATTY/action/replication_record"}},"created_at":"2026-05-18T02:04:53.500660+00:00","updated_at":"2026-05-18T02:04:53.500660+00:00"}