{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2005:LXGPEJU5XUKAVRLMMC3IENBYMZ","short_pith_number":"pith:LXGPEJU5","schema_version":"1.0","canonical_sha256":"5dccf2269dbd140ac56c60b6823438664c11168fa655f5c5fb0abd44e2cdcf5b","source":{"kind":"arxiv","id":"astro-ph/0512153","version":1},"attestation_state":"computed","paper":{"title":"Non-LTE metal abundances in V652 Her and HD144941","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C.S. Jeffery, M.F. Nieva, N. Przybilla, U. Heber","submitted_at":"2005-12-06T15:07:41Z","abstract_excerpt":"Two evolutionary scenarios are proposed for the formation of extreme helium stars: a post-AGB star suffering from a late thermal pulse, or the merger of two white dwarfs. An identification of the evolutionary channel for individual objects has to rely on surface abundances. We present preliminary results from a non-LTE analysis of CNO, Mg and S for two unique objects, V652 Her and HD144941. Non-LTE abundance corrections for these elements range from negligible values to ~0.7 dex. Non-LTE effects typically lead to systematic shifts in the abundances relative to LTE and reduce the uncertainties."},"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":"astro-ph/0512153","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-12-06T15:07:41Z","cross_cats_sorted":[],"title_canon_sha256":"9215d6ce2bffc001d401128e86660c1f86b495206ab7d223e6c6e0df6c77f696","abstract_canon_sha256":"1f2f4c52c93566616d0ea7855451cb86ca7e685084e25e021093554c37889bed"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:51:27.204929Z","signature_b64":"8UbjXcM5kZIZt7sRJ73285MrHeBxwyIGNBXqAQEdXDzzx6tOOVh94oCcJ0bDLZT/BodiDHJU7r863YSj4p4bBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5dccf2269dbd140ac56c60b6823438664c11168fa655f5c5fb0abd44e2cdcf5b","last_reissued_at":"2026-07-04T14:51:27.204531Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:51:27.204531Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Non-LTE metal abundances in V652 Her and HD144941","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C.S. Jeffery, M.F. Nieva, N. Przybilla, U. Heber","submitted_at":"2005-12-06T15:07:41Z","abstract_excerpt":"Two evolutionary scenarios are proposed for the formation of extreme helium stars: a post-AGB star suffering from a late thermal pulse, or the merger of two white dwarfs. An identification of the evolutionary channel for individual objects has to rely on surface abundances. We present preliminary results from a non-LTE analysis of CNO, Mg and S for two unique objects, V652 Her and HD144941. Non-LTE abundance corrections for these elements range from negligible values to ~0.7 dex. Non-LTE effects typically lead to systematic shifts in the abundances relative to LTE and reduce the uncertainties."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0512153","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0512153/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"astro-ph/0512153","created_at":"2026-07-04T14:51:27.204588+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0512153v1","created_at":"2026-07-04T14:51:27.204588+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0512153","created_at":"2026-07-04T14:51:27.204588+00:00"},{"alias_kind":"pith_short_12","alias_value":"LXGPEJU5XUKA","created_at":"2026-07-04T14:51:27.204588+00:00"},{"alias_kind":"pith_short_16","alias_value":"LXGPEJU5XUKAVRLM","created_at":"2026-07-04T14:51:27.204588+00:00"},{"alias_kind":"pith_short_8","alias_value":"LXGPEJU5","created_at":"2026-07-04T14:51:27.204588+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/LXGPEJU5XUKAVRLMMC3IENBYMZ","json":"https://pith.science/pith/LXGPEJU5XUKAVRLMMC3IENBYMZ.json","graph_json":"https://pith.science/api/pith-number/LXGPEJU5XUKAVRLMMC3IENBYMZ/graph.json","events_json":"https://pith.science/api/pith-number/LXGPEJU5XUKAVRLMMC3IENBYMZ/events.json","paper":"https://pith.science/paper/LXGPEJU5"},"agent_actions":{"view_html":"https://pith.science/pith/LXGPEJU5XUKAVRLMMC3IENBYMZ","download_json":"https://pith.science/pith/LXGPEJU5XUKAVRLMMC3IENBYMZ.json","view_paper":"https://pith.science/paper/LXGPEJU5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0512153&json=true","fetch_graph":"https://pith.science/api/pith-number/LXGPEJU5XUKAVRLMMC3IENBYMZ/graph.json","fetch_events":"https://pith.science/api/pith-number/LXGPEJU5XUKAVRLMMC3IENBYMZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LXGPEJU5XUKAVRLMMC3IENBYMZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LXGPEJU5XUKAVRLMMC3IENBYMZ/action/storage_attestation","attest_author":"https://pith.science/pith/LXGPEJU5XUKAVRLMMC3IENBYMZ/action/author_attestation","sign_citation":"https://pith.science/pith/LXGPEJU5XUKAVRLMMC3IENBYMZ/action/citation_signature","submit_replication":"https://pith.science/pith/LXGPEJU5XUKAVRLMMC3IENBYMZ/action/replication_record"}},"created_at":"2026-07-04T14:51:27.204588+00:00","updated_at":"2026-07-04T14:51:27.204588+00:00"}