{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:KHOHU6WQK3QP5RYKGUFXYIH2MM","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":"2afdb452eae0b5db334a1ce4733a645167c3c2385555641b244e700ed8525a42","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-08-16T12:27:44Z","title_canon_sha256":"146be370569c809d3ee8ca62764b04707af8e8f547b37fb0c04fb9e74acd5936"},"schema_version":"1.0","source":{"id":"2208.07720","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.07720","created_at":"2026-07-05T04:53:04Z"},{"alias_kind":"arxiv_version","alias_value":"2208.07720v1","created_at":"2026-07-05T04:53:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.07720","created_at":"2026-07-05T04:53:04Z"},{"alias_kind":"pith_short_12","alias_value":"KHOHU6WQK3QP","created_at":"2026-07-05T04:53:04Z"},{"alias_kind":"pith_short_16","alias_value":"KHOHU6WQK3QP5RYK","created_at":"2026-07-05T04:53:04Z"},{"alias_kind":"pith_short_8","alias_value":"KHOHU6WQ","created_at":"2026-07-05T04:53:04Z"}],"graph_snapshots":[{"event_id":"sha256:355dbdb1c4d1f5228aca84e3bd1ea526fa4cbc7aaf2efa559447d264f52e1d91","target":"graph","created_at":"2026-07-05T04:53:04Z","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/2208.07720/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"BPS CS 22940-0009 is a helium-rich B-star that shares characteristics with both helium-rich B subdwarfs and extreme helium stars. The optical spectrum of BPS CS 22940-0009 has been analysed from SALT observations. The atmospheric parameters were found to be $T_{\\rm eff} = 34970 \\pm 370$ K, $\\log g/{\\rm cm \\, s^{-2}} = 4.79 \\pm 0.17$, $n_{\\rm H}/n_{\\rm He} \\simeq 0.007$, $n_{\\rm C}/n_{\\rm He} \\simeq 0.007$, $n_{\\rm N}/n_{\\rm He} \\simeq 0.002$, although further improvement to the helium line fits would be desirable. This places the star as a link between the He-sdB and EHe populations in $g$-$T$","authors_text":"C. S. Jeffery, E. J. Snowdon, L. J. A. Scott, V. M. Woolf","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-08-16T12:27:44Z","title":"Spectroscopic analysis of BPS CS 22940-0009: connecting evolved helium stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.07720","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":"sha256:72998addd1d7ef92f85d6a8545b3b33d41dcc7e74cc6594de83331e4e0d43724","target":"record","created_at":"2026-07-05T04:53:04Z","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":"2afdb452eae0b5db334a1ce4733a645167c3c2385555641b244e700ed8525a42","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-08-16T12:27:44Z","title_canon_sha256":"146be370569c809d3ee8ca62764b04707af8e8f547b37fb0c04fb9e74acd5936"},"schema_version":"1.0","source":{"id":"2208.07720","kind":"arxiv","version":1}},"canonical_sha256":"51dc7a7ad056e0fec70a350b7c20fa63323bcae67e51b732caf31107f09c73eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"51dc7a7ad056e0fec70a350b7c20fa63323bcae67e51b732caf31107f09c73eb","first_computed_at":"2026-07-05T04:53:04.127885Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:53:04.127885Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oTiU3aAfq4Gd2QIL+Di71C6apdRmG2EqZSi4JTpmxfJi4K4wLg2WYdFvosC39IF7LGODhAIOYn7Q8vKa+Ti8Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:53:04.128375Z","signed_message":"canonical_sha256_bytes"},"source_id":"2208.07720","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72998addd1d7ef92f85d6a8545b3b33d41dcc7e74cc6594de83331e4e0d43724","sha256:355dbdb1c4d1f5228aca84e3bd1ea526fa4cbc7aaf2efa559447d264f52e1d91"],"state_sha256":"a6060a2d1ee3e535000afd2e46180d243fc1102ec32073e1395291e7ff8207a4"}