{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2TTT33KMVZ2TRHRIWR6GOPWHA2","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":"2a7e7f3fc2dc4d80d6eabc6daf10f9d4a5ff98c0684dae17847b380717828c66","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-02-12T00:59:02Z","title_canon_sha256":"8eee93b42518be5b75f683d0bea4ad457b1026efc844ee66c031cb377393b035"},"schema_version":"1.0","source":{"id":"1302.2679","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.2679","created_at":"2026-05-18T01:51:42Z"},{"alias_kind":"arxiv_version","alias_value":"1302.2679v1","created_at":"2026-05-18T01:51:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.2679","created_at":"2026-05-18T01:51:42Z"},{"alias_kind":"pith_short_12","alias_value":"2TTT33KMVZ2T","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2TTT33KMVZ2TRHRI","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2TTT33KM","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:26bd3c5dcc81e3f9fc4698f66fdd45d2bab6ff9734be6ac6ae8a741f2fd9673b","target":"graph","created_at":"2026-05-18T01:51:42Z","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":"Infrared stellar photometry from 2MASS and spectral line imaging observations of 12CO and 13CO J = 1-0 line emission from the FCRAO 14m telescope are analysed to assess the variation of the CO abundance with physical conditions throughout the Orion A and Orion B molecular clouds. Three distinct Av regimes are identified in which the ratio between the 13CO column density and visual extinction changes corresponding to the photon dominated envelope, the strongly self-shielded interior, and the cold, dense volumes of the clouds. Within the strongly self-shielded interior of the Orion A cloud, the ","authors_text":"C.M. Brunt, F. Ripple, M.H. Heyer, R. Gutermuth, R.L. Snell","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-02-12T00:59:02Z","title":"CO Abundance Variations in the Orion Molecular Cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.2679","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":"sha256:08aabd064763cf74ca6b659a876b85f2c0a46f108029c109df2a986b658d2357","target":"record","created_at":"2026-05-18T01:51:42Z","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":"2a7e7f3fc2dc4d80d6eabc6daf10f9d4a5ff98c0684dae17847b380717828c66","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-02-12T00:59:02Z","title_canon_sha256":"8eee93b42518be5b75f683d0bea4ad457b1026efc844ee66c031cb377393b035"},"schema_version":"1.0","source":{"id":"1302.2679","kind":"arxiv","version":1}},"canonical_sha256":"d4e73ded4cae75389e28b47c673ec706b96828ec666214602583669190e35ef6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d4e73ded4cae75389e28b47c673ec706b96828ec666214602583669190e35ef6","first_computed_at":"2026-05-18T01:51:42.364495Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:42.364495Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WrD7PhacrNk3C7uOXtyMx/fbwM5Nu+R8DHUDIPPRUICg8meKHEjhPlaks7RkuZKlHuQRsdLLI09Dmm5DBUPuAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:42.365009Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.2679","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:08aabd064763cf74ca6b659a876b85f2c0a46f108029c109df2a986b658d2357","sha256:26bd3c5dcc81e3f9fc4698f66fdd45d2bab6ff9734be6ac6ae8a741f2fd9673b"],"state_sha256":"152cf910dfc80631cd4a2217fa5484e6cb125b5d45e3ef2f890aa5ab96a19c56"}