{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:PLMR5HV6A6RCEORTMKO5R3IMYC","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":"ecf9865b35037e20e2e2e8ec143135a3a0f737f76f4dda273f168fefa1b0b993","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-11-25T16:10:54Z","title_canon_sha256":"e2c736b84c08ce01161bdcaf493c8dedd1df2944d8a0bc2a42fa16f5148f45b5"},"schema_version":"1.0","source":{"id":"1211.5772","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.5772","created_at":"2026-05-18T01:52:55Z"},{"alias_kind":"arxiv_version","alias_value":"1211.5772v1","created_at":"2026-05-18T01:52:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.5772","created_at":"2026-05-18T01:52:55Z"},{"alias_kind":"pith_short_12","alias_value":"PLMR5HV6A6RC","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PLMR5HV6A6RCEORT","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PLMR5HV6","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:61799625afbde08cc6dd971ae97f29485a3c6e23305dbb0959ce866b9981ec09","target":"graph","created_at":"2026-05-18T01:52:55Z","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":"As part of the Herschel Guaranteed Time Key Programme CHESS, we present the discovery of a diffuse gas component in the foreground of the intermediate-mass protostar OMC-2 FIR 4, located in the Orion A region. Making use of the full HIFI spectrum of OMC-2 FIR 4 obtained in CHESS, we detected several ground-state lines from OH+, H2O+, HF, and CH+, all of them seen in absorption against the dust continuum emission of the protostar's envelope. The lines peak at a velocity of 9 km/s, which is blue-shifted by 2 km/s with respect to the systemic velocity of OMC-2 FIR 4 (V = 11.4 km/s). We derived co","authors_text":"Ana L\\'opez-Sepulcre, Asunci\\'on Fuente, Carsten Dominik, Cecilia Ceccarelli, Emmanuel Caux, Mihkel Kama, Tom\\'as Alonso-Albi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-11-25T16:10:54Z","title":"Herschel CHESS discovery of the fossil cloud that gave birth to the Trapezium and Orion KL"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.5772","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:ece92013b0b4db225c322fa6c4c74503741f269b9f083cd111b0535368ab46b0","target":"record","created_at":"2026-05-18T01:52:55Z","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":"ecf9865b35037e20e2e2e8ec143135a3a0f737f76f4dda273f168fefa1b0b993","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-11-25T16:10:54Z","title_canon_sha256":"e2c736b84c08ce01161bdcaf493c8dedd1df2944d8a0bc2a42fa16f5148f45b5"},"schema_version":"1.0","source":{"id":"1211.5772","kind":"arxiv","version":1}},"canonical_sha256":"7ad91e9ebe07a2223a33629dd8ed0cc08e7c799b47eb6f3287e8e2e28e28765e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7ad91e9ebe07a2223a33629dd8ed0cc08e7c799b47eb6f3287e8e2e28e28765e","first_computed_at":"2026-05-18T01:52:55.382551Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:55.382551Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pzvDL4ngnK3M739O/ct6+AOFEovwm37dTbzydFNQJhcKPDke4zkvex4LmvABjZEoza36PHEq8YO933QeHxL0Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:55.383012Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.5772","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ece92013b0b4db225c322fa6c4c74503741f269b9f083cd111b0535368ab46b0","sha256:61799625afbde08cc6dd971ae97f29485a3c6e23305dbb0959ce866b9981ec09"],"state_sha256":"f1361adad665c23ed097b00d7cf8b960edba1541ff501f434a7db61c9445ce59"}