{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:CQHTKLYWOPJ5JJPXJI6GWSBEFY","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":"10cbce769d4e8f89480b5c9a813e5805596f2f801f176c52727664e576d691c7","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-07-13T20:02:24Z","title_canon_sha256":"2246e5300ebed6bcd49c65d51761c26641cf3d55274da49056c70c109845d38e"},"schema_version":"1.0","source":{"id":"astro-ph/0407270","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0407270","created_at":"2026-05-18T01:07:32Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0407270v1","created_at":"2026-05-18T01:07:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0407270","created_at":"2026-05-18T01:07:32Z"},{"alias_kind":"pith_short_12","alias_value":"CQHTKLYWOPJ5","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"CQHTKLYWOPJ5JJPX","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"CQHTKLYW","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:0dfe2fddd36404192f51e394d200ecc9304ce95d83853009b3b9f314a46478b4","target":"graph","created_at":"2026-05-18T01:07:32Z","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":"Absorption and emission lines originating from the nu3 C-H stretching manifold of gas phase CH4 were discovered in the high resolution (R=25,000) infrared L band spectrum along the line of sight toward NGC 7538 : IRS9. These observations provide a diagnostic of the complex dynamics and chemistry in a massive star forming region. The line shapes resemble P Cygni profiles with the absorption and emission components shifted by ~7 km/s with respect to the systemic velocity. Similar velocity components were observed in CO at 4.7 um, but in contrast to CH4, the CO shows deep absorption due to a high","authors_text":"A. C. A. Boogert, G. A. Blake, K. Oberg (Caltech)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-07-13T20:02:24Z","title":"Methane Abundance Variations toward the Massive Protostar NGC 7538 : IRS9"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0407270","kind":"arxiv","version":1},"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":"sha256:5cecd89a8f63b81e630596a3cda344e24b3ed2478f05115b305845a4e63277ff","target":"record","created_at":"2026-05-18T01:07:32Z","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":"10cbce769d4e8f89480b5c9a813e5805596f2f801f176c52727664e576d691c7","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-07-13T20:02:24Z","title_canon_sha256":"2246e5300ebed6bcd49c65d51761c26641cf3d55274da49056c70c109845d38e"},"schema_version":"1.0","source":{"id":"astro-ph/0407270","kind":"arxiv","version":1}},"canonical_sha256":"140f352f1673d3d4a5f74a3c6b48242e3056c4b402901170d77c082d4da3e211","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"140f352f1673d3d4a5f74a3c6b48242e3056c4b402901170d77c082d4da3e211","first_computed_at":"2026-05-18T01:07:32.356363Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:32.356363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NH+fPPcjmpIgW2RrPteIbq86/JPmny0Ndx9M39xVYveYQ7P28MrB7ob16A1XG0bcb85FRa1MFP6dRS3Yy99TAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:32.357034Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0407270","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5cecd89a8f63b81e630596a3cda344e24b3ed2478f05115b305845a4e63277ff","sha256:0dfe2fddd36404192f51e394d200ecc9304ce95d83853009b3b9f314a46478b4"],"state_sha256":"cd1c461424fce368ab778e366712ab407c2febc8493a3bf5ef2397f3b79d0e4c"}