{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:YVJJZVA2OZGIBFZUE625TMDVIO","short_pith_number":"pith:YVJJZVA2","canonical_record":{"source":{"id":"1104.1638","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-04-08T20:00:06Z","cross_cats_sorted":[],"title_canon_sha256":"9252ebdace92762e71f3049df0cfbd92ddbb13ad2068bed6ec09bf7a330b4a54","abstract_canon_sha256":"db21c4120fad353557ec8c3b38986f00bc602a267a33178c3aa1971255833e69"},"schema_version":"1.0"},"canonical_sha256":"c5529cd41a764c80973427b5d9b075439369cf09ccec5fba5cb6f2f2a1f08e94","source":{"kind":"arxiv","id":"1104.1638","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1638","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1638v1","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1638","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"pith_short_12","alias_value":"YVJJZVA2OZGI","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"YVJJZVA2OZGIBFZU","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"YVJJZVA2","created_at":"2026-05-18T12:26:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:YVJJZVA2OZGIBFZUE625TMDVIO","target":"record","payload":{"canonical_record":{"source":{"id":"1104.1638","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-04-08T20:00:06Z","cross_cats_sorted":[],"title_canon_sha256":"9252ebdace92762e71f3049df0cfbd92ddbb13ad2068bed6ec09bf7a330b4a54","abstract_canon_sha256":"db21c4120fad353557ec8c3b38986f00bc602a267a33178c3aa1971255833e69"},"schema_version":"1.0"},"canonical_sha256":"c5529cd41a764c80973427b5d9b075439369cf09ccec5fba5cb6f2f2a1f08e94","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:36.106951Z","signature_b64":"peWUhUAZCWtdKAJfwigXY4/myDesHTsiQ+ahm59UcQpKNnNBNJLzxocVHb/ISGTmmC27DU2xNeh/P5yfnUuuDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c5529cd41a764c80973427b5d9b075439369cf09ccec5fba5cb6f2f2a1f08e94","last_reissued_at":"2026-05-18T02:02:36.106150Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:36.106150Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.1638","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":"2026-05-18T02:02:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0nqKQ943OqRTwvBd5YUG4F07GUZnZzN1SNnuldSQrjS6/c1TUYrGH0FwC6rOEQvBJHiB9nfPkZnD83SPW76jBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:40:02.206998Z"},"content_sha256":"f8766c1bc3cf94667206161a4602d19f209dbe35578e3773658007baad459b19","schema_version":"1.0","event_id":"sha256:f8766c1bc3cf94667206161a4602d19f209dbe35578e3773658007baad459b19"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:YVJJZVA2OZGIBFZUE625TMDVIO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Cepheid mass discrepancy and pulsation-driven mass loss","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Hilding R. Neilson, Matteo Cantiello, Norbert Langer (AIfA)","submitted_at":"2011-04-08T20:00:06Z","abstract_excerpt":"Context. A longstanding challenge for understanding classical Cepheids is the Cepheid mass discrepancy, where theoretical mass estimates using stellar evolution and stellar pulsation calculations have been found to differ by approximately 10 - 20%. Aims. We study the role of pulsation-driven mass loss during the Cepheid stage of evolution as a possible solution to this mass discrepancy. Methods. We computed stellar evolution models with a Cepheid mass-loss prescription and various amounts of convective core overshooting. The contribution of mass loss towards the mass discrepancy is determined "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1638","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":"2026-05-18T02:02:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QusXsL0JOsskcALLsEeBFQLfNQ2WIimz7vs+luxQBBHhAvTz1w0e3eMzP+sfB+8kiylLu5mRQyZFY5IKf55fAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:40:02.207352Z"},"content_sha256":"772cfd6248cf29f30c1c3a58b32fb97bf8fd8871c85cb94bde4461e677529d85","schema_version":"1.0","event_id":"sha256:772cfd6248cf29f30c1c3a58b32fb97bf8fd8871c85cb94bde4461e677529d85"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YVJJZVA2OZGIBFZUE625TMDVIO/bundle.json","state_url":"https://pith.science/pith/YVJJZVA2OZGIBFZUE625TMDVIO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YVJJZVA2OZGIBFZUE625TMDVIO/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":"2026-06-03T18:40:02Z","links":{"resolver":"https://pith.science/pith/YVJJZVA2OZGIBFZUE625TMDVIO","bundle":"https://pith.science/pith/YVJJZVA2OZGIBFZUE625TMDVIO/bundle.json","state":"https://pith.science/pith/YVJJZVA2OZGIBFZUE625TMDVIO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YVJJZVA2OZGIBFZUE625TMDVIO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:YVJJZVA2OZGIBFZUE625TMDVIO","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":"db21c4120fad353557ec8c3b38986f00bc602a267a33178c3aa1971255833e69","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-04-08T20:00:06Z","title_canon_sha256":"9252ebdace92762e71f3049df0cfbd92ddbb13ad2068bed6ec09bf7a330b4a54"},"schema_version":"1.0","source":{"id":"1104.1638","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.1638","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"arxiv_version","alias_value":"1104.1638v1","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.1638","created_at":"2026-05-18T02:02:36Z"},{"alias_kind":"pith_short_12","alias_value":"YVJJZVA2OZGI","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"YVJJZVA2OZGIBFZU","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"YVJJZVA2","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:772cfd6248cf29f30c1c3a58b32fb97bf8fd8871c85cb94bde4461e677529d85","target":"graph","created_at":"2026-05-18T02:02:36Z","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":"Context. A longstanding challenge for understanding classical Cepheids is the Cepheid mass discrepancy, where theoretical mass estimates using stellar evolution and stellar pulsation calculations have been found to differ by approximately 10 - 20%. Aims. We study the role of pulsation-driven mass loss during the Cepheid stage of evolution as a possible solution to this mass discrepancy. Methods. We computed stellar evolution models with a Cepheid mass-loss prescription and various amounts of convective core overshooting. The contribution of mass loss towards the mass discrepancy is determined ","authors_text":"Hilding R. Neilson, Matteo Cantiello, Norbert Langer (AIfA)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-04-08T20:00:06Z","title":"The Cepheid mass discrepancy and pulsation-driven mass loss"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.1638","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:f8766c1bc3cf94667206161a4602d19f209dbe35578e3773658007baad459b19","target":"record","created_at":"2026-05-18T02:02:36Z","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":"db21c4120fad353557ec8c3b38986f00bc602a267a33178c3aa1971255833e69","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-04-08T20:00:06Z","title_canon_sha256":"9252ebdace92762e71f3049df0cfbd92ddbb13ad2068bed6ec09bf7a330b4a54"},"schema_version":"1.0","source":{"id":"1104.1638","kind":"arxiv","version":1}},"canonical_sha256":"c5529cd41a764c80973427b5d9b075439369cf09ccec5fba5cb6f2f2a1f08e94","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5529cd41a764c80973427b5d9b075439369cf09ccec5fba5cb6f2f2a1f08e94","first_computed_at":"2026-05-18T02:02:36.106150Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:36.106150Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"peWUhUAZCWtdKAJfwigXY4/myDesHTsiQ+ahm59UcQpKNnNBNJLzxocVHb/ISGTmmC27DU2xNeh/P5yfnUuuDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:36.106951Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.1638","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8766c1bc3cf94667206161a4602d19f209dbe35578e3773658007baad459b19","sha256:772cfd6248cf29f30c1c3a58b32fb97bf8fd8871c85cb94bde4461e677529d85"],"state_sha256":"8519341eedb3879f236709d9d35dc1b7f1bb45c4215ccf59204f672c913ccbf0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k45a+HpdziChQUBhzOSKPkLxBHWmDEcLJ2vpSDenP3BOulIGLE6vpKK1iEIPzRPcAVRyzSG/oGokRpbYdcyfBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T18:40:02.209372Z","bundle_sha256":"f659f7c02da7022e7033422019c6fdeb6207de2a01975ac6cc2fe437eea79dbb"}}