{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:6SUO4ZO2OOBDTN3OE5JFCANZRO","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":"2d5562f471e122cae61a4b1c31039dfc637424e462b5802cf66bac2d647a7a9b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-04-30T00:25:17Z","title_canon_sha256":"a467ab083f31b02987abb93c06dafa5b1d15d4a6ed93b7b008bfbfd40097fa4b"},"schema_version":"1.0","source":{"id":"astro-ph/0104474","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0104474","created_at":"2026-07-04T16:23:18Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0104474v2","created_at":"2026-07-04T16:23:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0104474","created_at":"2026-07-04T16:23:18Z"},{"alias_kind":"pith_short_12","alias_value":"6SUO4ZO2OOBD","created_at":"2026-07-04T16:23:18Z"},{"alias_kind":"pith_short_16","alias_value":"6SUO4ZO2OOBDTN3O","created_at":"2026-07-04T16:23:18Z"},{"alias_kind":"pith_short_8","alias_value":"6SUO4ZO2","created_at":"2026-07-04T16:23:18Z"}],"graph_snapshots":[{"event_id":"sha256:2753aff6b42d6e37463cad8266001f84692fe49abd55f701f8065fb7a38224d7","target":"graph","created_at":"2026-07-04T16:23:18Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0104474/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"From the analysis of the near-UV spectrum of the QSO 2206-199, obtained with a long series of exposures with STIS on the HST, we deduce a value (D/H) = (1.65 +/- 0.35) x 10(-5) (1 sigma error) for the abundance of deuterium in the z(abs) = 2.0762 damped Lyman alpha system (DLA) along this sight-line. The velocity structure of this absorber is very simple and its neutral hydrogen column density, N(H I), is accurately known; the error in D/H is mostly due to the limited signal-to-noise ratio of the spectrum. Since this is also one of the most metal-poor DLAs, with metal abundances of about 1/200","authors_text":"Cambridge) David V. Bowen (Princeton University Observatory), Max Pettini (Institute of Astronomy","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-04-30T00:25:17Z","title":"A New Measurement of the Primordial Abundance of Deuterium: Toward Convergence with the Baryon Density from the CMB?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0104474","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:a5a5326c767cf9009d2f51699a1c3ad5730e029223abd046d533ad367f3222c7","target":"record","created_at":"2026-07-04T16:23:18Z","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":"2d5562f471e122cae61a4b1c31039dfc637424e462b5802cf66bac2d647a7a9b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-04-30T00:25:17Z","title_canon_sha256":"a467ab083f31b02987abb93c06dafa5b1d15d4a6ed93b7b008bfbfd40097fa4b"},"schema_version":"1.0","source":{"id":"astro-ph/0104474","kind":"arxiv","version":2}},"canonical_sha256":"f4a8ee65da738239b76e27525101b98b840d401b556f5eec9905fcb90a9138c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f4a8ee65da738239b76e27525101b98b840d401b556f5eec9905fcb90a9138c0","first_computed_at":"2026-07-04T16:23:18.818006Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:23:18.818006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Py56Ut4brDF5T6QBj74n5bXSpizNm+U80czD1U6zoyCfe2PDHgliEt3UHYYOMb2qo78+5AvEHIeziooHUtJDBw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:23:18.818373Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0104474","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a5a5326c767cf9009d2f51699a1c3ad5730e029223abd046d533ad367f3222c7","sha256:2753aff6b42d6e37463cad8266001f84692fe49abd55f701f8065fb7a38224d7"],"state_sha256":"1adc3a05043f9e0b30cc8bdfbf578a83610b1ea3fad495ea8754102cb1c636d3"}