{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:UUUCOBV6ZP42RKIVHBGGSJWKFU","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":"b4d06da0571ba0e17d4570f92e58ad625d4e8bb1d1cc38bff4d28d25b1f139e1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-01-13T08:26:54Z","title_canon_sha256":"8f4c9f73110091f6a0e2d0f5e99c3c44e7d3d418f9278463e226f8366ece842f"},"schema_version":"1.0","source":{"id":"1601.03165","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.03165","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"arxiv_version","alias_value":"1601.03165v1","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.03165","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"pith_short_12","alias_value":"UUUCOBV6ZP42","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"UUUCOBV6ZP42RKIV","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"UUUCOBV6","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:af5392cdddb54067c97ac8297e9f1bf279164dfa625441716320417ab7fbbd01","target":"graph","created_at":"2026-05-18T01:19:01Z","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 present observations of 12CO J=1-0, 13CO J=1-0, HI, and all four ground-state transitions of the hydroxyl (OH) radical toward a sharp boundary region of the Taurus molecular cloud. Based on a PDR model that reproduces CO and [CI] emission from the same region, we modeled the three OH transitions, 1612, 1665, 1667 MHz successfully through escape probability non-LTE radiative transfer model calculations. We could not reproduce the 1720 MHz observations, due to un-modeled pumping mechanisms, of which the most likely candidate is a C-shock. The abundance of OH and CO-dark molecular gas (DMG) ar","authors_text":"Di Li, Duo Xu, Nannan Yue, Paul F. Goldsmith","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-01-13T08:26:54Z","title":"Evolution of OH and CO-dark Molecular Gas Fraction Across a Molecular Cloud Boundary In Taurus"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.03165","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":"sha256:0a5dfe0312c07f04387f1f090a910d2b88cfa15cf2247b31b339894e888e7e22","target":"record","created_at":"2026-05-18T01:19:01Z","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":"b4d06da0571ba0e17d4570f92e58ad625d4e8bb1d1cc38bff4d28d25b1f139e1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-01-13T08:26:54Z","title_canon_sha256":"8f4c9f73110091f6a0e2d0f5e99c3c44e7d3d418f9278463e226f8366ece842f"},"schema_version":"1.0","source":{"id":"1601.03165","kind":"arxiv","version":1}},"canonical_sha256":"a5282706becbf9a8a915384c6926ca2d2d41c33ea5b4470c482893c483f9a48e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a5282706becbf9a8a915384c6926ca2d2d41c33ea5b4470c482893c483f9a48e","first_computed_at":"2026-05-18T01:19:01.385338Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:01.385338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rwipOOvff9aKk8/lMOg2er6chWWJwYdNas38Cd82QaEC5bJXfPexmOvPZ92NV8whfzSb+ORPdRI8hS3oBu4rAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:01.385786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.03165","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0a5dfe0312c07f04387f1f090a910d2b88cfa15cf2247b31b339894e888e7e22","sha256:af5392cdddb54067c97ac8297e9f1bf279164dfa625441716320417ab7fbbd01"],"state_sha256":"f63c4fe78ba805552e5e5f4d03e23fe9051f90c5c09ff826e8593a18f93f7396"}