{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:OB63CHTJDSRT3GE64GULLW5DJF","short_pith_number":"pith:OB63CHTJ","schema_version":"1.0","canonical_sha256":"707db11e691ca33d989ee1a8b5dba349768dddba511463f8ecb5f7d065ef22a5","source":{"kind":"arxiv","id":"1908.07528","version":1},"attestation_state":"computed","paper":{"title":"Towards precise stellar ages: combining isochrone fitting with empirical gyrochronology","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Daniel Foreman-Mackey, David W. Hogg, Jason Curtis, Jennifer van Saders, John Brewer, Megan Bedell, Rocio Kiman, Ruth Angus, Stephen R. Kane, Timothy D. Morton","submitted_at":"2019-08-20T18:00:00Z","abstract_excerpt":"We present a new age-dating technique that combines gyrochronology with isochrone fitting to infer ages for FGKM main-sequence and subgiant field stars. Gyrochronology and isochrone fitting are each capable of providing relatively precise ages for field stars in certain areas of the Hertzsprung-Russell diagram: gyrochronology works optimally for cool main-sequence stars, and isochrone fitting can provide precise ages for stars near the main-sequence turnoff. Combined, these two age-dating techniques can provide precise and accurate ages for a broader range of stellar masses and evolutionary st"},"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":"1908.07528","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-08-20T18:00:00Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"39456f536bc2081480a0a8794ac66d4ec7c960dff20fb74bed36fad17f41caf3","abstract_canon_sha256":"c01854638500215ff10a66f2a224521d2277f74a121b76bab998f92885cfb984"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:12:05.096137Z","signature_b64":"46dzdCiYDMxMYYoUwiAsoAYNSZ2hBw298ZDz6xNW2xBb1WwdIoJnKkJHYU9wy7nOLqj569SMISucpRTJWMU5Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"707db11e691ca33d989ee1a8b5dba349768dddba511463f8ecb5f7d065ef22a5","last_reissued_at":"2026-07-05T00:12:05.095704Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:12:05.095704Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Towards precise stellar ages: combining isochrone fitting with empirical gyrochronology","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Daniel Foreman-Mackey, David W. Hogg, Jason Curtis, Jennifer van Saders, John Brewer, Megan Bedell, Rocio Kiman, Ruth Angus, Stephen R. Kane, Timothy D. Morton","submitted_at":"2019-08-20T18:00:00Z","abstract_excerpt":"We present a new age-dating technique that combines gyrochronology with isochrone fitting to infer ages for FGKM main-sequence and subgiant field stars. Gyrochronology and isochrone fitting are each capable of providing relatively precise ages for field stars in certain areas of the Hertzsprung-Russell diagram: gyrochronology works optimally for cool main-sequence stars, and isochrone fitting can provide precise ages for stars near the main-sequence turnoff. Combined, these two age-dating techniques can provide precise and accurate ages for a broader range of stellar masses and evolutionary st"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.07528","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.07528/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":"1908.07528","created_at":"2026-07-05T00:12:05.095762+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.07528v1","created_at":"2026-07-05T00:12:05.095762+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.07528","created_at":"2026-07-05T00:12:05.095762+00:00"},{"alias_kind":"pith_short_12","alias_value":"OB63CHTJDSRT","created_at":"2026-07-05T00:12:05.095762+00:00"},{"alias_kind":"pith_short_16","alias_value":"OB63CHTJDSRT3GE6","created_at":"2026-07-05T00:12:05.095762+00:00"},{"alias_kind":"pith_short_8","alias_value":"OB63CHTJ","created_at":"2026-07-05T00:12:05.095762+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.05651","citing_title":"Hints of enhanced magnetic activity after the intermediate rotation period gap as traced by the chromospheric Ca ii infrared triplet","ref_index":8,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/OB63CHTJDSRT3GE64GULLW5DJF","json":"https://pith.science/pith/OB63CHTJDSRT3GE64GULLW5DJF.json","graph_json":"https://pith.science/api/pith-number/OB63CHTJDSRT3GE64GULLW5DJF/graph.json","events_json":"https://pith.science/api/pith-number/OB63CHTJDSRT3GE64GULLW5DJF/events.json","paper":"https://pith.science/paper/OB63CHTJ"},"agent_actions":{"view_html":"https://pith.science/pith/OB63CHTJDSRT3GE64GULLW5DJF","download_json":"https://pith.science/pith/OB63CHTJDSRT3GE64GULLW5DJF.json","view_paper":"https://pith.science/paper/OB63CHTJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.07528&json=true","fetch_graph":"https://pith.science/api/pith-number/OB63CHTJDSRT3GE64GULLW5DJF/graph.json","fetch_events":"https://pith.science/api/pith-number/OB63CHTJDSRT3GE64GULLW5DJF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OB63CHTJDSRT3GE64GULLW5DJF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OB63CHTJDSRT3GE64GULLW5DJF/action/storage_attestation","attest_author":"https://pith.science/pith/OB63CHTJDSRT3GE64GULLW5DJF/action/author_attestation","sign_citation":"https://pith.science/pith/OB63CHTJDSRT3GE64GULLW5DJF/action/citation_signature","submit_replication":"https://pith.science/pith/OB63CHTJDSRT3GE64GULLW5DJF/action/replication_record"}},"created_at":"2026-07-05T00:12:05.095762+00:00","updated_at":"2026-07-05T00:12:05.095762+00:00"}