{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:K5VR5M23FGPFLP2BLA5O3ZFNIS","short_pith_number":"pith:K5VR5M23","schema_version":"1.0","canonical_sha256":"576b1eb35b299e55bf41583aede4ad4485300e2501d821873b9b9b8c1c66bc45","source":{"kind":"arxiv","id":"1905.12710","version":4},"attestation_state":"computed","paper":{"title":"A cooling anomaly of high-mass white dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Brice M\\'enard, Jeffrey D. Cummings, Sihao Cheng","submitted_at":"2019-05-29T20:35:38Z","abstract_excerpt":"Recently, the power of Gaia data has revealed an enhancement of high-mass white dwarfs (WDs) on the Hertzsprung--Russell diagram, called the Q branch. This branch is located at the high-mass end of the recently identified crystallization branch. Investigating its properties, we find that the number density and velocity distribution on the Q branch cannot be explained by the cooling delay of crystallization alone, suggesting the existence of an extra cooling delay. To quantify this delay, we statistically compare two age indicators -- the dynamical age inferred from transverse velocity, and the"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1905.12710","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-29T20:35:38Z","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"8fb441f5f1555ba4add441116a478740f3ee2549e54b23b4e2e684e4d697d043","abstract_canon_sha256":"03f7d08f24223c95192913c7f52e166bb242aa3e3eef552125972968e3d4cb65"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:25:26.883447Z","signature_b64":"c6W/c7Myp5y3XzdH5e4e53X6M5kwREeKhpeLdpvyaoDj4r4qEzoagTA1e+RJJ4k7zYjgMGTnqA5xDrWZQO6cAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"576b1eb35b299e55bf41583aede4ad4485300e2501d821873b9b9b8c1c66bc45","last_reissued_at":"2026-07-05T00:25:26.882900Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:25:26.882900Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A cooling anomaly of high-mass white dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Brice M\\'enard, Jeffrey D. Cummings, Sihao Cheng","submitted_at":"2019-05-29T20:35:38Z","abstract_excerpt":"Recently, the power of Gaia data has revealed an enhancement of high-mass white dwarfs (WDs) on the Hertzsprung--Russell diagram, called the Q branch. This branch is located at the high-mass end of the recently identified crystallization branch. Investigating its properties, we find that the number density and velocity distribution on the Q branch cannot be explained by the cooling delay of crystallization alone, suggesting the existence of an extra cooling delay. To quantify this delay, we statistically compare two age indicators -- the dynamical age inferred from transverse velocity, and the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.12710","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1905.12710/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1905.12710","created_at":"2026-07-05T00:25:26.882987+00:00"},{"alias_kind":"arxiv_version","alias_value":"1905.12710v4","created_at":"2026-07-05T00:25:26.882987+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.12710","created_at":"2026-07-05T00:25:26.882987+00:00"},{"alias_kind":"pith_short_12","alias_value":"K5VR5M23FGPF","created_at":"2026-07-05T00:25:26.882987+00:00"},{"alias_kind":"pith_short_16","alias_value":"K5VR5M23FGPFLP2B","created_at":"2026-07-05T00:25:26.882987+00:00"},{"alias_kind":"pith_short_8","alias_value":"K5VR5M23","created_at":"2026-07-05T00:25:26.882987+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.06357","citing_title":"White dwarfs within 13 pc: Insights from ultraviolet spectroscopy","ref_index":119,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/K5VR5M23FGPFLP2BLA5O3ZFNIS","json":"https://pith.science/pith/K5VR5M23FGPFLP2BLA5O3ZFNIS.json","graph_json":"https://pith.science/api/pith-number/K5VR5M23FGPFLP2BLA5O3ZFNIS/graph.json","events_json":"https://pith.science/api/pith-number/K5VR5M23FGPFLP2BLA5O3ZFNIS/events.json","paper":"https://pith.science/paper/K5VR5M23"},"agent_actions":{"view_html":"https://pith.science/pith/K5VR5M23FGPFLP2BLA5O3ZFNIS","download_json":"https://pith.science/pith/K5VR5M23FGPFLP2BLA5O3ZFNIS.json","view_paper":"https://pith.science/paper/K5VR5M23","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1905.12710&json=true","fetch_graph":"https://pith.science/api/pith-number/K5VR5M23FGPFLP2BLA5O3ZFNIS/graph.json","fetch_events":"https://pith.science/api/pith-number/K5VR5M23FGPFLP2BLA5O3ZFNIS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/K5VR5M23FGPFLP2BLA5O3ZFNIS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/K5VR5M23FGPFLP2BLA5O3ZFNIS/action/storage_attestation","attest_author":"https://pith.science/pith/K5VR5M23FGPFLP2BLA5O3ZFNIS/action/author_attestation","sign_citation":"https://pith.science/pith/K5VR5M23FGPFLP2BLA5O3ZFNIS/action/citation_signature","submit_replication":"https://pith.science/pith/K5VR5M23FGPFLP2BLA5O3ZFNIS/action/replication_record"}},"created_at":"2026-07-05T00:25:26.882987+00:00","updated_at":"2026-07-05T00:25:26.882987+00:00"}