{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:NXAQ3LU6DKDY5L35OEZESVMP2S","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":"115cceab34fd1514a0895b35a79b4ce6929521a889ada60c4f5dd54b1fe4b80a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-12-05T18:00:52Z","title_canon_sha256":"d4e44d95eb42375a6f4f5217a18f3df5654a5141c554cf35f65bb886ada508d1"},"schema_version":"1.0","source":{"id":"2412.04386","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.04386","created_at":"2026-07-05T09:45:03Z"},{"alias_kind":"arxiv_version","alias_value":"2412.04386v1","created_at":"2026-07-05T09:45:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.04386","created_at":"2026-07-05T09:45:03Z"},{"alias_kind":"pith_short_12","alias_value":"NXAQ3LU6DKDY","created_at":"2026-07-05T09:45:03Z"},{"alias_kind":"pith_short_16","alias_value":"NXAQ3LU6DKDY5L35","created_at":"2026-07-05T09:45:03Z"},{"alias_kind":"pith_short_8","alias_value":"NXAQ3LU6","created_at":"2026-07-05T09:45:03Z"}],"graph_snapshots":[{"event_id":"sha256:543d7e9907712c961af614c6db09652b11b84c0c5427c2460062a0cc0005c43b","target":"graph","created_at":"2026-07-05T09:45:03Z","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/2412.04386/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The red supergiant (RSG) problem, which describes the apparent lack of high-luminosity progenitors detected in Type II supernova (SN) pre-images, has been a contentious topic for two decades. We re-assess this problem using a new RSG population of the Milky Way supplemented with RSGs from other galaxies in the Local Group. In particular, we quantify the uncertainties inherent to assumptions made regarding the star's temperature or spectral type and the corresponding bolometric correction. We find that only M3 or later RSGs reproduce the steepness seen from the SN II pre-imaged sample. To asses","authors_text":"Chris Ashall, Sarah Healy, Shunsaku Horiuchi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-12-05T18:00:52Z","title":"The Red Supergiant Problem: As Seen from the Local Group's Red Supergiant Populations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.04386","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":"sha256:81d261fe85d7f1af6e78fee0a19cce3703cfa4362d89e6ae41d51eb389c6fe36","target":"record","created_at":"2026-07-05T09:45:03Z","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":"115cceab34fd1514a0895b35a79b4ce6929521a889ada60c4f5dd54b1fe4b80a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-12-05T18:00:52Z","title_canon_sha256":"d4e44d95eb42375a6f4f5217a18f3df5654a5141c554cf35f65bb886ada508d1"},"schema_version":"1.0","source":{"id":"2412.04386","kind":"arxiv","version":1}},"canonical_sha256":"6dc10dae9e1a878eaf7d713249558fd4a1ea8b82d358a1a56c0f875734863fae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6dc10dae9e1a878eaf7d713249558fd4a1ea8b82d358a1a56c0f875734863fae","first_computed_at":"2026-07-05T09:45:03.139191Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:45:03.139191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fT0eNQLuWmZS7iTic4o7DMUkkUmllhdc92gthtj1vwq3fbfPTWy8xhSZJ5E163HKUww47SY29YOlU7CEzFnVAg==","signature_status":"signed_v1","signed_at":"2026-07-05T09:45:03.139743Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.04386","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81d261fe85d7f1af6e78fee0a19cce3703cfa4362d89e6ae41d51eb389c6fe36","sha256:543d7e9907712c961af614c6db09652b11b84c0c5427c2460062a0cc0005c43b"],"state_sha256":"ef5ed4a70a8894a9c28a37c3f3fc58218aa53eef4aada761340197e7375922d9"}