{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:UPDX35VOTVEDFPZJE44IOFZKGS","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":"945c56efc4c3625f9e2496d6f870c63438c841c6f33445bcc5a87fc5799d8a1c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-01-19T21:41:28Z","title_canon_sha256":"8d760a718a4b7b873e5da672ab906e2cea5701ce41003b28910a991cf7bd2ecc"},"schema_version":"1.0","source":{"id":"1001.3414","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.3414","created_at":"2026-05-18T02:09:32Z"},{"alias_kind":"arxiv_version","alias_value":"1001.3414v1","created_at":"2026-05-18T02:09:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.3414","created_at":"2026-05-18T02:09:32Z"},{"alias_kind":"pith_short_12","alias_value":"UPDX35VOTVED","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"UPDX35VOTVEDFPZJ","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"UPDX35VO","created_at":"2026-05-18T12:26:15Z"}],"graph_snapshots":[{"event_id":"sha256:1e783bc4c3276f26f7a7a7ee5248f0c4b8a08ea057bf7cca1518bfbda80e1d70","target":"graph","created_at":"2026-05-18T02:09:32Z","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":"We report on H-alpha spectroscopy of the 2009.0 spectroscopic event of eta Carinae collected via SMARTS observations using the CTIO 1.5 m telescope and echelle spectrograph. Our observations were made almost every night over a two month interval around the predicted minimum of eta Car. We observed a significant fading of the line emission that reached a minimum seven days after the X-ray minimum. About 17 d prior to the H-alpha flux minimum, the H-alpha profile exhibited the emergence of a broad, P Cygni type, absorption component (near a Doppler shift of -500 km/s) and a narrow absorption com","authors_text":"A. T. Okazaki, D. R. Gies, E. Fernandez-Lajus, N. D. Richardson, T. J. Henry","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-01-19T21:41:28Z","title":"The H-alpha Variations of eta Carinae During the 2009.0 Spectroscopic Event"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.3414","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:b7cd08aa54746f9d484f868fa72fba5c72ebd1e8789756f5758ed2d600df948d","target":"record","created_at":"2026-05-18T02:09:32Z","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":"945c56efc4c3625f9e2496d6f870c63438c841c6f33445bcc5a87fc5799d8a1c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-01-19T21:41:28Z","title_canon_sha256":"8d760a718a4b7b873e5da672ab906e2cea5701ce41003b28910a991cf7bd2ecc"},"schema_version":"1.0","source":{"id":"1001.3414","kind":"arxiv","version":1}},"canonical_sha256":"a3c77df6ae9d4832bf29273887172a34846c169bfc838fd2f96b5a2504192ace","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a3c77df6ae9d4832bf29273887172a34846c169bfc838fd2f96b5a2504192ace","first_computed_at":"2026-05-18T02:09:32.316230Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:09:32.316230Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dnBPb/jRp6xxcLX8Eve3BvEo+rpHWX/5BC+mPFByJEar8aW02e7NZQSPqC1uOQzK1zRMoLkzVSh0ZxhHk9i4CA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:09:32.316943Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.3414","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b7cd08aa54746f9d484f868fa72fba5c72ebd1e8789756f5758ed2d600df948d","sha256:1e783bc4c3276f26f7a7a7ee5248f0c4b8a08ea057bf7cca1518bfbda80e1d70"],"state_sha256":"45c3a58db579bf55a9a846707e8d7af7c64f23ffe163c877a4b5591a0e76b1a2"}