{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:TVUDFQR7FAVBFTOJ7MGI4FPUFA","short_pith_number":"pith:TVUDFQR7","schema_version":"1.0","canonical_sha256":"9d6832c23f282a12cdc9fb0c8e15f4281a8de91e27a4cdeb7c65edebb572e99b","source":{"kind":"arxiv","id":"1602.06286","version":1},"attestation_state":"computed","paper":{"title":"Constraining white dwarf structure and neutrino physics in 47 Tucanae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Harvey Richer, Jason Kalirai, Jeremy Heyl, Pier-Emmanuel Tremblay, Ryan Goldsbury","submitted_at":"2016-02-19T20:41:33Z","abstract_excerpt":"We present a robust statistical analysis of the white dwarf cooling sequence in 47 Tucanae. We combine HST UV and optical data in the core of the cluster, Modules for Experiments in Stellar Evolution (MESA) white dwarf cooling models, white dwarf atmosphere models, artificial star tests, and a Markov Chain Monte Carlo (MCMC) sampling method to fit white dwarf cooling models to our data directly. We use a technique known as the unbinned maximum likelihood to fit these models to our data without binning. We use these data to constrain neutrino production and the thickness of the hydrogen layer i"},"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":"1602.06286","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-02-19T20:41:33Z","cross_cats_sorted":[],"title_canon_sha256":"770f5850a1b6a1c7eeb9cc2c7f124839d77865f5516a6bb614ec3c38b282da05","abstract_canon_sha256":"8d120e24ab90d4aad25fbca96619cb1290e0127e6602412dac7f1900c6bbd8df"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:40.670837Z","signature_b64":"aasNsRZYaCpBfMfk/q2JColxdwerY775hkYWZe5pDl3p1Lgv9//HQrHDUgwktuGNjwpSFmB+B/73GMTO5dAJDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9d6832c23f282a12cdc9fb0c8e15f4281a8de91e27a4cdeb7c65edebb572e99b","last_reissued_at":"2026-05-18T01:16:40.670171Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:40.670171Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Constraining white dwarf structure and neutrino physics in 47 Tucanae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Harvey Richer, Jason Kalirai, Jeremy Heyl, Pier-Emmanuel Tremblay, Ryan Goldsbury","submitted_at":"2016-02-19T20:41:33Z","abstract_excerpt":"We present a robust statistical analysis of the white dwarf cooling sequence in 47 Tucanae. We combine HST UV and optical data in the core of the cluster, Modules for Experiments in Stellar Evolution (MESA) white dwarf cooling models, white dwarf atmosphere models, artificial star tests, and a Markov Chain Monte Carlo (MCMC) sampling method to fit white dwarf cooling models to our data directly. We use a technique known as the unbinned maximum likelihood to fit these models to our data without binning. We use these data to constrain neutrino production and the thickness of the hydrogen layer i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.06286","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1602.06286","created_at":"2026-05-18T01:16:40.670283+00:00"},{"alias_kind":"arxiv_version","alias_value":"1602.06286v1","created_at":"2026-05-18T01:16:40.670283+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.06286","created_at":"2026-05-18T01:16:40.670283+00:00"},{"alias_kind":"pith_short_12","alias_value":"TVUDFQR7FAVB","created_at":"2026-05-18T12:30:46.583412+00:00"},{"alias_kind":"pith_short_16","alias_value":"TVUDFQR7FAVBFTOJ","created_at":"2026-05-18T12:30:46.583412+00:00"},{"alias_kind":"pith_short_8","alias_value":"TVUDFQR7","created_at":"2026-05-18T12:30:46.583412+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/TVUDFQR7FAVBFTOJ7MGI4FPUFA","json":"https://pith.science/pith/TVUDFQR7FAVBFTOJ7MGI4FPUFA.json","graph_json":"https://pith.science/api/pith-number/TVUDFQR7FAVBFTOJ7MGI4FPUFA/graph.json","events_json":"https://pith.science/api/pith-number/TVUDFQR7FAVBFTOJ7MGI4FPUFA/events.json","paper":"https://pith.science/paper/TVUDFQR7"},"agent_actions":{"view_html":"https://pith.science/pith/TVUDFQR7FAVBFTOJ7MGI4FPUFA","download_json":"https://pith.science/pith/TVUDFQR7FAVBFTOJ7MGI4FPUFA.json","view_paper":"https://pith.science/paper/TVUDFQR7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1602.06286&json=true","fetch_graph":"https://pith.science/api/pith-number/TVUDFQR7FAVBFTOJ7MGI4FPUFA/graph.json","fetch_events":"https://pith.science/api/pith-number/TVUDFQR7FAVBFTOJ7MGI4FPUFA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TVUDFQR7FAVBFTOJ7MGI4FPUFA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TVUDFQR7FAVBFTOJ7MGI4FPUFA/action/storage_attestation","attest_author":"https://pith.science/pith/TVUDFQR7FAVBFTOJ7MGI4FPUFA/action/author_attestation","sign_citation":"https://pith.science/pith/TVUDFQR7FAVBFTOJ7MGI4FPUFA/action/citation_signature","submit_replication":"https://pith.science/pith/TVUDFQR7FAVBFTOJ7MGI4FPUFA/action/replication_record"}},"created_at":"2026-05-18T01:16:40.670283+00:00","updated_at":"2026-05-18T01:16:40.670283+00:00"}