{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:Z36RMTDV5FFWQGDLVHMOXOZ32X","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":"5284a778807c6cc9bb9f65a3b3f7b2d71848bcbd2e2070b4351717b506514834","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-05-26T13:16:53Z","title_canon_sha256":"8d0f9faf53b19d519af60536e6077feab9a507a023f8e5e2f2037642177ed11f"},"schema_version":"1.0","source":{"id":"1105.5276","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.5276","created_at":"2026-05-18T02:01:50Z"},{"alias_kind":"arxiv_version","alias_value":"1105.5276v1","created_at":"2026-05-18T02:01:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.5276","created_at":"2026-05-18T02:01:50Z"},{"alias_kind":"pith_short_12","alias_value":"Z36RMTDV5FFW","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"Z36RMTDV5FFWQGDL","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"Z36RMTDV","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:2778264e6d85fd925c9f74790e1050c1619ce43702d796ab46556ac466e62fec","target":"graph","created_at":"2026-05-18T02:01:50Z","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 performed an iron abundance determination of the hot, hydrogen deficient post-AGB star PG1159-035, which is the prototype of the PG1159 spectral class and the GW Vir pulsators, and of two related objects (PG1520+525, PG1144+005), based on the first detection of Fe VIII lines in stellar photospheres. In another PG1159 star, PG1424+535, we detect Fe VII lines. In all four stars, each within Teff = 110,000 - 150,000 K, we find a solar iron abundance. This result agrees with our recent abundance analysis of the hottest PG1159 stars (Teff = 150,000 - 200,000 K) that exhibit Fe X lines. On the wh","authors_text":"Jeff W. Kruk, Klaus Werner, Robert L. Kurucz, Thomas Rauch","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-05-26T13:16:53Z","title":"Iron abundance in the prototype PG1159 star, GW Vir pulsator PG1159-035, and related objects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.5276","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:e43ffdc1aa3dac17d5208ceab9cf6eb8991273d3184445ae9bb67550c2559d8e","target":"record","created_at":"2026-05-18T02:01:50Z","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":"5284a778807c6cc9bb9f65a3b3f7b2d71848bcbd2e2070b4351717b506514834","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-05-26T13:16:53Z","title_canon_sha256":"8d0f9faf53b19d519af60536e6077feab9a507a023f8e5e2f2037642177ed11f"},"schema_version":"1.0","source":{"id":"1105.5276","kind":"arxiv","version":1}},"canonical_sha256":"cefd164c75e94b68186ba9d8ebbb3bd5f28d92ae9e8d232f1d353298854f0169","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cefd164c75e94b68186ba9d8ebbb3bd5f28d92ae9e8d232f1d353298854f0169","first_computed_at":"2026-05-18T02:01:50.490172Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:50.490172Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tzVGCLKH+IC0YVeldGEZGfwNahTtncxnNkc7XRXr9RMbznvLQJLtYOA1YUDjBpKEpij5eUJOGQrsRL+9YiBsAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:50.490703Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.5276","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e43ffdc1aa3dac17d5208ceab9cf6eb8991273d3184445ae9bb67550c2559d8e","sha256:2778264e6d85fd925c9f74790e1050c1619ce43702d796ab46556ac466e62fec"],"state_sha256":"e1f2bf19fa932c0e5e329ced187b890d64361c2ed3c77586ea1b4b91699d3d85"}