{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:QDM3T5LDSUVLTPSKLMTLY26O7P","short_pith_number":"pith:QDM3T5LD","canonical_record":{"source":{"id":"1203.0247","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-01T17:08:17Z","cross_cats_sorted":[],"title_canon_sha256":"cffebe8d84b57a5aeb6ecbd5758d9d616a89f155c4b0bb84a9447c4323e7ce1d","abstract_canon_sha256":"d934b3f1c82fd69a772b3c65136d4689cb72db9122904b7276629d579f62e0db"},"schema_version":"1.0"},"canonical_sha256":"80d9b9f563952ab9be4a5b26bc6bcefbeed6f372521c9954016c7d6d41d84c0d","source":{"kind":"arxiv","id":"1203.0247","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.0247","created_at":"2026-05-18T01:58:16Z"},{"alias_kind":"arxiv_version","alias_value":"1203.0247v1","created_at":"2026-05-18T01:58:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.0247","created_at":"2026-05-18T01:58:16Z"},{"alias_kind":"pith_short_12","alias_value":"QDM3T5LDSUVL","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"QDM3T5LDSUVLTPSK","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"QDM3T5LD","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:QDM3T5LDSUVLTPSKLMTLY26O7P","target":"record","payload":{"canonical_record":{"source":{"id":"1203.0247","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-01T17:08:17Z","cross_cats_sorted":[],"title_canon_sha256":"cffebe8d84b57a5aeb6ecbd5758d9d616a89f155c4b0bb84a9447c4323e7ce1d","abstract_canon_sha256":"d934b3f1c82fd69a772b3c65136d4689cb72db9122904b7276629d579f62e0db"},"schema_version":"1.0"},"canonical_sha256":"80d9b9f563952ab9be4a5b26bc6bcefbeed6f372521c9954016c7d6d41d84c0d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:16.100827Z","signature_b64":"JunD6213uqX3fP/kAWR4QQEcryK6YFEVlewZPYXc6m1Wbor3DmKdz9HhcphZvp5v3HIamSOlBcljb+l6HzyZCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"80d9b9f563952ab9be4a5b26bc6bcefbeed6f372521c9954016c7d6d41d84c0d","last_reissued_at":"2026-05-18T01:58:16.100131Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:16.100131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.0247","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:58:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LYRZijWsucWB3Yn1xcDZbhas/sDJxSYKg2WW1fcbNULKkTmyRRp/hs4wsa7ZhYMMBDk4/aL9XHT9YA8C3K56BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T20:43:09.393948Z"},"content_sha256":"4ea17adb47f19071bff5a5eddad682df44ac777b2d21ec2427bb33b3c2872d3e","schema_version":"1.0","event_id":"sha256:4ea17adb47f19071bff5a5eddad682df44ac777b2d21ec2427bb33b3c2872d3e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:QDM3T5LDSUVLTPSKLMTLY26O7P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Yellow and Red Supergiants of M33","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Georges Meynet, Maria R. Drout, Philip Massey","submitted_at":"2012-03-01T17:08:17Z","abstract_excerpt":"Yellow and red supergiants are evolved massive stars whose numbers and locations on the HR diagram can provide a stringent test for models of massive star evolution. Previous studies have found large discrepancies between the relative number of yellow supergiants observed as a function of mass and those predicted by evolutionary models, while a disagreement between the predicted and observed locations of red supergiants on the HR diagram was only recently resolved. Here we extend these studies by examining the yellow and red supergiant populations of M33. Unfortunately, identifying these stars"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.0247","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":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:58:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kNlQObJfRO+HYPsA8/V8st82PYLrLtXiANkORbkywO7hAsTx2sZLbB/CXJ6YlFyQBoeYJcf4m6CfbxalHG0cDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T20:43:09.394614Z"},"content_sha256":"7245008c1dcc7bbb97a19199765db1a4045a033bf70381cffbbb661cbf517f7f","schema_version":"1.0","event_id":"sha256:7245008c1dcc7bbb97a19199765db1a4045a033bf70381cffbbb661cbf517f7f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QDM3T5LDSUVLTPSKLMTLY26O7P/bundle.json","state_url":"https://pith.science/pith/QDM3T5LDSUVLTPSKLMTLY26O7P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QDM3T5LDSUVLTPSKLMTLY26O7P/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T20:43:09Z","links":{"resolver":"https://pith.science/pith/QDM3T5LDSUVLTPSKLMTLY26O7P","bundle":"https://pith.science/pith/QDM3T5LDSUVLTPSKLMTLY26O7P/bundle.json","state":"https://pith.science/pith/QDM3T5LDSUVLTPSKLMTLY26O7P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QDM3T5LDSUVLTPSKLMTLY26O7P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:QDM3T5LDSUVLTPSKLMTLY26O7P","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":"d934b3f1c82fd69a772b3c65136d4689cb72db9122904b7276629d579f62e0db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-01T17:08:17Z","title_canon_sha256":"cffebe8d84b57a5aeb6ecbd5758d9d616a89f155c4b0bb84a9447c4323e7ce1d"},"schema_version":"1.0","source":{"id":"1203.0247","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.0247","created_at":"2026-05-18T01:58:16Z"},{"alias_kind":"arxiv_version","alias_value":"1203.0247v1","created_at":"2026-05-18T01:58:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.0247","created_at":"2026-05-18T01:58:16Z"},{"alias_kind":"pith_short_12","alias_value":"QDM3T5LDSUVL","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"QDM3T5LDSUVLTPSK","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"QDM3T5LD","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:7245008c1dcc7bbb97a19199765db1a4045a033bf70381cffbbb661cbf517f7f","target":"graph","created_at":"2026-05-18T01:58:16Z","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":"Yellow and red supergiants are evolved massive stars whose numbers and locations on the HR diagram can provide a stringent test for models of massive star evolution. Previous studies have found large discrepancies between the relative number of yellow supergiants observed as a function of mass and those predicted by evolutionary models, while a disagreement between the predicted and observed locations of red supergiants on the HR diagram was only recently resolved. Here we extend these studies by examining the yellow and red supergiant populations of M33. Unfortunately, identifying these stars","authors_text":"Georges Meynet, Maria R. Drout, Philip Massey","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-01T17:08:17Z","title":"The Yellow and Red Supergiants of M33"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.0247","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":"sha256:4ea17adb47f19071bff5a5eddad682df44ac777b2d21ec2427bb33b3c2872d3e","target":"record","created_at":"2026-05-18T01:58:16Z","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":"d934b3f1c82fd69a772b3c65136d4689cb72db9122904b7276629d579f62e0db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-03-01T17:08:17Z","title_canon_sha256":"cffebe8d84b57a5aeb6ecbd5758d9d616a89f155c4b0bb84a9447c4323e7ce1d"},"schema_version":"1.0","source":{"id":"1203.0247","kind":"arxiv","version":1}},"canonical_sha256":"80d9b9f563952ab9be4a5b26bc6bcefbeed6f372521c9954016c7d6d41d84c0d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"80d9b9f563952ab9be4a5b26bc6bcefbeed6f372521c9954016c7d6d41d84c0d","first_computed_at":"2026-05-18T01:58:16.100131Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:16.100131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JunD6213uqX3fP/kAWR4QQEcryK6YFEVlewZPYXc6m1Wbor3DmKdz9HhcphZvp5v3HIamSOlBcljb+l6HzyZCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:16.100827Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.0247","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4ea17adb47f19071bff5a5eddad682df44ac777b2d21ec2427bb33b3c2872d3e","sha256:7245008c1dcc7bbb97a19199765db1a4045a033bf70381cffbbb661cbf517f7f"],"state_sha256":"ab0596d26126062af92131664918380e66620f3c101381a179504389070e5a99"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4yNrS4z5RQyrXcFiPsnoMVY9P95GVYg0X6d/NkUkiDyXnBLOi1nshjdYW+a57No4JIQpIzLcQ/4SuCrMYXdMCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T20:43:09.397817Z","bundle_sha256":"eec5d8ad280df364d897e056319b3528519598197f3b72323d386b4b3b6f7440"}}