{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:FALIQAD3CX47YNFVXVQUU3LW2Z","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":"025e15f77a11bd754be3340189f49cc0415d0acc21388a32f623cbceada96f99","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-17T13:53:07Z","title_canon_sha256":"2bfbb3d79e0f29d1845eac14be080ddc822e11bc3ee3e462586cfb1756b44fc5"},"schema_version":"1.0","source":{"id":"1701.04669","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.04669","created_at":"2026-05-18T00:13:32Z"},{"alias_kind":"arxiv_version","alias_value":"1701.04669v4","created_at":"2026-05-18T00:13:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.04669","created_at":"2026-05-18T00:13:32Z"},{"alias_kind":"pith_short_12","alias_value":"FALIQAD3CX47","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"FALIQAD3CX47YNFV","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"FALIQAD3","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:9bdf9471094c9b6644f0e7a241ce8785838a1b40e9886bb326355052da77c22f","target":"graph","created_at":"2026-05-18T00:13:32Z","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":"The Orion Nebula Cluster toward the HII region M42 is the most outstanding young cluster at the smallest distance 410pc among the rich high-mass stellar clusters. By newly analyzing the archival molecular data of the 12CO(J=1-0) emission at 21\" resolution, we identified at least three pairs of complementary distributions between two velocity components at 8km/s and 13km/s. We present a hypothesis that the two clouds collided with each other and triggered formation of the high-mass stars, mainly toward two regions including the nearly ten O stars, theta1 Ori and theta2 Ori, in M42 and the B sta","authors_text":"Akio Ohama, Asao Habe, Atsushi Nishimura, Hidetoshi Sano, Hiroaki Yamamoto, Kazufumi Torii, Kazuhiro Shima, Kengo Tachihara, Mikito Kohno, Toshikazu Onishi, Yasuo Fukui, Yoshito Shimajiri, Yusuke Hattori","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-17T13:53:07Z","title":"A new look at the molecular gas in M42 and M43; possible evidence for cloud-cloud collision which triggered formation of the OB stars in the Orion Nebula Cluster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.04669","kind":"arxiv","version":4},"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":"sha256:4d774950ff6c36b98e0274a05b7e2fc55fcbdfd5530d58e047ed57cac1ada623","target":"record","created_at":"2026-05-18T00:13:32Z","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":"025e15f77a11bd754be3340189f49cc0415d0acc21388a32f623cbceada96f99","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-17T13:53:07Z","title_canon_sha256":"2bfbb3d79e0f29d1845eac14be080ddc822e11bc3ee3e462586cfb1756b44fc5"},"schema_version":"1.0","source":{"id":"1701.04669","kind":"arxiv","version":4}},"canonical_sha256":"281688007b15f9fc34b5bd614a6d76d65eb0db9898bdfbf12fa34b54168d5e16","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"281688007b15f9fc34b5bd614a6d76d65eb0db9898bdfbf12fa34b54168d5e16","first_computed_at":"2026-05-18T00:13:32.881444Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:32.881444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pQQ8Zus5JpHBSeS2z9RhJBJpOiKz3C5l7tcGnLH8+Z1APc6f3g5viB5DtKRzLA6jLZgOPUfzEP/SykByB1T6CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:32.881871Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.04669","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4d774950ff6c36b98e0274a05b7e2fc55fcbdfd5530d58e047ed57cac1ada623","sha256:9bdf9471094c9b6644f0e7a241ce8785838a1b40e9886bb326355052da77c22f"],"state_sha256":"07913dbd21fa9af42bc160818ea64824f16059feca5463987b45af96c8c3bdf3"}