{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:ZPJUGX74ZOBSKWCISFX44HYZTS","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":"f734eab9eed40234db63545d3f9aba3c432e97709f5797b97a1ed59ba9f3e5d9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-29T06:08:17Z","title_canon_sha256":"830543d7eb48a5f1116f20f49d85b312086feafd58f06ad783d70ffac781bbd8"},"schema_version":"1.0","source":{"id":"1103.5549","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.5549","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"arxiv_version","alias_value":"1103.5549v2","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.5549","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"pith_short_12","alias_value":"ZPJUGX74ZOBS","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"ZPJUGX74ZOBSKWCI","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"ZPJUGX74","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:ef9959be2ef1f7f12c7b6cc5e2644113debd3cd1598b918ff12c92841aff6370","target":"graph","created_at":"2026-05-18T02:02:43Z","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":"Wolf-Rayet stars (WRs) are evolved massive stars, and the relative number of WC-type and WN-type WRs should vary with metallicity, providing a sensitive test of stellar evolutionary theory. The observed WC/WN ratio is much higher than that predicted by theory in some galaxies but this could be due to observational incompleteness for WN-types, which have weaker lines. Previous studies of M33's WR content show a galactocentric gradient in the relative numbers of WCs and WNs, but only small regions have been surveyed with sufficient sensitivity to detect all of the WNs. Here we present a sensitiv","authors_text":"Kathryn F. Neugent, Philip Massey","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-29T06:08:17Z","title":"The Wolf-Rayet Content of M33"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.5549","kind":"arxiv","version":2},"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:b43dd3ac4374deae2e582f8139ca503ac8618929582fbe6acadadf0ea558cf93","target":"record","created_at":"2026-05-18T02:02:43Z","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":"f734eab9eed40234db63545d3f9aba3c432e97709f5797b97a1ed59ba9f3e5d9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-29T06:08:17Z","title_canon_sha256":"830543d7eb48a5f1116f20f49d85b312086feafd58f06ad783d70ffac781bbd8"},"schema_version":"1.0","source":{"id":"1103.5549","kind":"arxiv","version":2}},"canonical_sha256":"cbd3435ffccb83255848916fce1f199c9a59f9d94066c1011eeab8a901f2b208","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cbd3435ffccb83255848916fce1f199c9a59f9d94066c1011eeab8a901f2b208","first_computed_at":"2026-05-18T02:02:43.702847Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:43.702847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p8VLsyCsQKoL26/GtyxPG5jyTtWQVxc7Gg+DKeBSmAle/iPgxhMMKHu3N7zDKy9YpSarSBpT3KPLsVlhgZGdBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:43.703504Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.5549","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b43dd3ac4374deae2e582f8139ca503ac8618929582fbe6acadadf0ea558cf93","sha256:ef9959be2ef1f7f12c7b6cc5e2644113debd3cd1598b918ff12c92841aff6370"],"state_sha256":"db75749bc6c2cffd52f7cfc19af42d656dbe69078845040dafedf357ad9daea4"}