{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:Z36RMTDV5FFWQGDLVHMOXOZ32X","short_pith_number":"pith:Z36RMTDV","schema_version":"1.0","canonical_sha256":"cefd164c75e94b68186ba9d8ebbb3bd5f28d92ae9e8d232f1d353298854f0169","source":{"kind":"arxiv","id":"1105.5276","version":1},"attestation_state":"computed","paper":{"title":"Iron abundance in the prototype PG1159 star, GW Vir pulsator PG1159-035, and related objects","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Jeff W. Kruk, Klaus Werner, Robert L. Kurucz, Thomas Rauch","submitted_at":"2011-05-26T13:16:53Z","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"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1105.5276","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-05-26T13:16:53Z","cross_cats_sorted":[],"title_canon_sha256":"8d0f9faf53b19d519af60536e6077feab9a507a023f8e5e2f2037642177ed11f","abstract_canon_sha256":"5284a778807c6cc9bb9f65a3b3f7b2d71848bcbd2e2070b4351717b506514834"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:50.490703Z","signature_b64":"tzVGCLKH+IC0YVeldGEZGfwNahTtncxnNkc7XRXr9RMbznvLQJLtYOA1YUDjBpKEpij5eUJOGQrsRL+9YiBsAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cefd164c75e94b68186ba9d8ebbb3bd5f28d92ae9e8d232f1d353298854f0169","last_reissued_at":"2026-05-18T02:01:50.490172Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:50.490172Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Iron abundance in the prototype PG1159 star, GW Vir pulsator PG1159-035, and related objects","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Jeff W. Kruk, Klaus Werner, Robert L. Kurucz, Thomas Rauch","submitted_at":"2011-05-26T13:16:53Z","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"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.5276","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1105.5276","created_at":"2026-05-18T02:01:50.490250+00:00"},{"alias_kind":"arxiv_version","alias_value":"1105.5276v1","created_at":"2026-05-18T02:01:50.490250+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.5276","created_at":"2026-05-18T02:01:50.490250+00:00"},{"alias_kind":"pith_short_12","alias_value":"Z36RMTDV5FFW","created_at":"2026-05-18T12:26:47.523578+00:00"},{"alias_kind":"pith_short_16","alias_value":"Z36RMTDV5FFWQGDL","created_at":"2026-05-18T12:26:47.523578+00:00"},{"alias_kind":"pith_short_8","alias_value":"Z36RMTDV","created_at":"2026-05-18T12:26:47.523578+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/Z36RMTDV5FFWQGDLVHMOXOZ32X","json":"https://pith.science/pith/Z36RMTDV5FFWQGDLVHMOXOZ32X.json","graph_json":"https://pith.science/api/pith-number/Z36RMTDV5FFWQGDLVHMOXOZ32X/graph.json","events_json":"https://pith.science/api/pith-number/Z36RMTDV5FFWQGDLVHMOXOZ32X/events.json","paper":"https://pith.science/paper/Z36RMTDV"},"agent_actions":{"view_html":"https://pith.science/pith/Z36RMTDV5FFWQGDLVHMOXOZ32X","download_json":"https://pith.science/pith/Z36RMTDV5FFWQGDLVHMOXOZ32X.json","view_paper":"https://pith.science/paper/Z36RMTDV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1105.5276&json=true","fetch_graph":"https://pith.science/api/pith-number/Z36RMTDV5FFWQGDLVHMOXOZ32X/graph.json","fetch_events":"https://pith.science/api/pith-number/Z36RMTDV5FFWQGDLVHMOXOZ32X/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Z36RMTDV5FFWQGDLVHMOXOZ32X/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Z36RMTDV5FFWQGDLVHMOXOZ32X/action/storage_attestation","attest_author":"https://pith.science/pith/Z36RMTDV5FFWQGDLVHMOXOZ32X/action/author_attestation","sign_citation":"https://pith.science/pith/Z36RMTDV5FFWQGDLVHMOXOZ32X/action/citation_signature","submit_replication":"https://pith.science/pith/Z36RMTDV5FFWQGDLVHMOXOZ32X/action/replication_record"}},"created_at":"2026-05-18T02:01:50.490250+00:00","updated_at":"2026-05-18T02:01:50.490250+00:00"}