{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:75LOCT5SCUMSJVWAHKWKAX5JMD","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":"e4827b2fea59773101b898ed4d874f0a793e2a2a5c05b1d020ead5f87962c100","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-12-12T21:00:06Z","title_canon_sha256":"3cc85de76d4bffb77f69aa95bdd75ba951f0e80ff2fa452f97e5e8a69896b732"},"schema_version":"1.0","source":{"id":"1612.03916","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.03916","created_at":"2026-05-18T00:52:37Z"},{"alias_kind":"arxiv_version","alias_value":"1612.03916v1","created_at":"2026-05-18T00:52:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.03916","created_at":"2026-05-18T00:52:37Z"},{"alias_kind":"pith_short_12","alias_value":"75LOCT5SCUMS","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"75LOCT5SCUMSJVWA","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"75LOCT5S","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:40c8d3ca310d2c332d735f3464c76a3ae72c60518b88b18f0bd5254f3b6dce6d","target":"graph","created_at":"2026-05-18T00:52:37Z","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 report the results of spectroscopic observations and numerical modelling of the H II region IRAS 18153-1651. Our study was motivated by the discovery of an optical arc and two main-sequence stars of spectral type B1 and B3 near the centre of IRAS 18153-1651. We interpret the arc as the edge of the wind bubble (blown by the B1 star), whose brightness is enhanced by the interaction with a photoevaporation flow from a nearby molecular cloud. This interpretation implies that we deal with a unique case of a young massive star (the most massive member of a recently formed low-mass star cluster) c","authors_text":"A.-N.Chene, A.Y.Kniazev, E.K.Grebel, J.Mackey, N.Castro, N.Langer, T.J.Haworth, V.V.Gvaramadze","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-12-12T21:00:06Z","title":"IRAS 18153-1651: an H II region with a possible wind bubble blown by a young main-sequence B star"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.03916","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":"sha256:5c752e82d2cb3e5445e788bb05b89f9f32334a865ae6849ab04394cfd7cd2c0c","target":"record","created_at":"2026-05-18T00:52:37Z","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":"e4827b2fea59773101b898ed4d874f0a793e2a2a5c05b1d020ead5f87962c100","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-12-12T21:00:06Z","title_canon_sha256":"3cc85de76d4bffb77f69aa95bdd75ba951f0e80ff2fa452f97e5e8a69896b732"},"schema_version":"1.0","source":{"id":"1612.03916","kind":"arxiv","version":1}},"canonical_sha256":"ff56e14fb2151924d6c03aaca05fa960db0de8c330cd634a0969c71bfbf4a7b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff56e14fb2151924d6c03aaca05fa960db0de8c330cd634a0969c71bfbf4a7b1","first_computed_at":"2026-05-18T00:52:37.262826Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:37.262826Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YFlwRoVmHpgqWb9raECzqCK6UDpO611ACpw4m6q0A4bD6WzzhsoSbJAzMQFdxcX5sYkymNOsqppbmJ1196RhAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:37.263504Z","signed_message":"canonical_sha256_bytes"},"source_id":"1612.03916","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5c752e82d2cb3e5445e788bb05b89f9f32334a865ae6849ab04394cfd7cd2c0c","sha256:40c8d3ca310d2c332d735f3464c76a3ae72c60518b88b18f0bd5254f3b6dce6d"],"state_sha256":"df8cf61577a79b930da7f1e1c56e7bcaa75d9c26577692d81b75d6d6c8510ecb"}