{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:JVKG4OWFEMSC2T42FWUN2JCLDC","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":"7a9e5d8fb6c4c9b92f16a77062811df6cd394413984693c4da07f475f7204f7b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-13T23:52:48Z","title_canon_sha256":"f47bbfd5dd5e2691a7572a89bd57d15b08be45402681f0e3ecf88fc98d40ce0a"},"schema_version":"1.0","source":{"id":"astro-ph/0412315","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0412315","created_at":"2026-07-04T16:45:24Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0412315v1","created_at":"2026-07-04T16:45:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0412315","created_at":"2026-07-04T16:45:24Z"},{"alias_kind":"pith_short_12","alias_value":"JVKG4OWFEMSC","created_at":"2026-07-04T16:45:24Z"},{"alias_kind":"pith_short_16","alias_value":"JVKG4OWFEMSC2T42","created_at":"2026-07-04T16:45:24Z"},{"alias_kind":"pith_short_8","alias_value":"JVKG4OWF","created_at":"2026-07-04T16:45:24Z"}],"graph_snapshots":[{"event_id":"sha256:6f503b577f47b62c1516925f33e399730686be8ee8428e77edf24bbec587cb8c","target":"graph","created_at":"2026-07-04T16:45:24Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0412315/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present empirically determined ionization conditions for the winds of 106 luminous B0 to B5 stars observed by IUE. The UV wind lines are modelled to extract products of mass-loss rates (Mdot) times ionization fractions (Mdot q_i(w), where w = v/v_infty) for N V, C IV, Si IV, Si III, Al III and C II. We describe the general behaviour of the Mdot q_i(w) and their ratios, demonstrating that the wind ionization increases with distance from the star, contrary to recent findings for O star winds. Using empirical mass-loss rates (from H alpha observations) and model prescriptions, we derive mean q","authors_text":"(2) SGT, D. Massa (2), Inc., NASA GSFC), R.K. Prinja (1), S.C. Searle (1) ((1) UCL","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-12-13T23:52:48Z","title":"The ionization structure of early-B supergiant winds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0412315","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:da014ad3d284492fa07692eaaa19b7880eaa8df42f2f6f0533d95cbe15dcb68a","target":"record","created_at":"2026-07-04T16:45:24Z","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":"7a9e5d8fb6c4c9b92f16a77062811df6cd394413984693c4da07f475f7204f7b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-13T23:52:48Z","title_canon_sha256":"f47bbfd5dd5e2691a7572a89bd57d15b08be45402681f0e3ecf88fc98d40ce0a"},"schema_version":"1.0","source":{"id":"astro-ph/0412315","kind":"arxiv","version":1}},"canonical_sha256":"4d546e3ac523242d4f9a2da8dd244b18908421459e31bd8138200958504b9fc3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d546e3ac523242d4f9a2da8dd244b18908421459e31bd8138200958504b9fc3","first_computed_at":"2026-07-04T16:45:24.407783Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:45:24.407783Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"52F+08KRUwyT0OKBgkWM14VL1jXtODKFRGKf4eH2RzgDz6JPEQQ5UzTyQRMxfM982Gae3Le5/skp5qVJIHCHDA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:45:24.408253Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0412315","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da014ad3d284492fa07692eaaa19b7880eaa8df42f2f6f0533d95cbe15dcb68a","sha256:6f503b577f47b62c1516925f33e399730686be8ee8428e77edf24bbec587cb8c"],"state_sha256":"ee16c83fa4822de51766cb4c2783bff19e1ce39b9097abab9a78e6e62eb5895e"}