{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:GFL2S4TBGFEFSLVR5Z7HMXPYD2","short_pith_number":"pith:GFL2S4TB","schema_version":"1.0","canonical_sha256":"3157a972613148592eb1ee7e765df81e96fd8b96251666a8102f2cde83650c08","source":{"kind":"arxiv","id":"1412.3468","version":1},"attestation_state":"computed","paper":{"title":"The occurrence of classical Cepheids in binary systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Fabian R.N. Schneider, Hilding R. Neilson, Nancy R. Evans, Norbert Langer, Robert G. Izzard","submitted_at":"2014-12-10T21:03:53Z","abstract_excerpt":"Classical Cepheids, like binary stars, are laboratories for stellar evolution and Cepheids in binary systems are especially powerful ones. About one-third of Galactic Cepheids are known to have companions and Cepheids in eclipsing binary systems have recently been discovered in the Large Magellanic Cloud. However, there are no known Galactic binary Cepheids with orbital periods less than one year. We compute population synthesis models of binary Cepheids to compare to the observed period and eccentricity distributions of Galactic Cepheids as well as to the number of observed eclipsing binary C"},"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":"1412.3468","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-10T21:03:53Z","cross_cats_sorted":[],"title_canon_sha256":"a7be00838b64839301e84dc957c570fe6420b9c8655f6b5e74c17fc1cb99883e","abstract_canon_sha256":"8412f8a922a89867a630c858f2502288848624a31e18851305605a5f175831dc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:19.956856Z","signature_b64":"CAiQLJglze1wsdqNSR/miW3QYLx4Z2pdq2mz/XrMKjNVW35PoJpAKIKtY6g/MJZ1ShizCmdYBumVNf2bmRTGDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3157a972613148592eb1ee7e765df81e96fd8b96251666a8102f2cde83650c08","last_reissued_at":"2026-05-18T01:41:19.956281Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:19.956281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The occurrence of classical Cepheids in binary systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Fabian R.N. Schneider, Hilding R. Neilson, Nancy R. Evans, Norbert Langer, Robert G. Izzard","submitted_at":"2014-12-10T21:03:53Z","abstract_excerpt":"Classical Cepheids, like binary stars, are laboratories for stellar evolution and Cepheids in binary systems are especially powerful ones. About one-third of Galactic Cepheids are known to have companions and Cepheids in eclipsing binary systems have recently been discovered in the Large Magellanic Cloud. However, there are no known Galactic binary Cepheids with orbital periods less than one year. We compute population synthesis models of binary Cepheids to compare to the observed period and eccentricity distributions of Galactic Cepheids as well as to the number of observed eclipsing binary C"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.3468","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":"1412.3468","created_at":"2026-05-18T01:41:19.956370+00:00"},{"alias_kind":"arxiv_version","alias_value":"1412.3468v1","created_at":"2026-05-18T01:41:19.956370+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.3468","created_at":"2026-05-18T01:41:19.956370+00:00"},{"alias_kind":"pith_short_12","alias_value":"GFL2S4TBGFEF","created_at":"2026-05-18T12:28:30.664211+00:00"},{"alias_kind":"pith_short_16","alias_value":"GFL2S4TBGFEFSLVR","created_at":"2026-05-18T12:28:30.664211+00:00"},{"alias_kind":"pith_short_8","alias_value":"GFL2S4TB","created_at":"2026-05-18T12:28:30.664211+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/GFL2S4TBGFEFSLVR5Z7HMXPYD2","json":"https://pith.science/pith/GFL2S4TBGFEFSLVR5Z7HMXPYD2.json","graph_json":"https://pith.science/api/pith-number/GFL2S4TBGFEFSLVR5Z7HMXPYD2/graph.json","events_json":"https://pith.science/api/pith-number/GFL2S4TBGFEFSLVR5Z7HMXPYD2/events.json","paper":"https://pith.science/paper/GFL2S4TB"},"agent_actions":{"view_html":"https://pith.science/pith/GFL2S4TBGFEFSLVR5Z7HMXPYD2","download_json":"https://pith.science/pith/GFL2S4TBGFEFSLVR5Z7HMXPYD2.json","view_paper":"https://pith.science/paper/GFL2S4TB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1412.3468&json=true","fetch_graph":"https://pith.science/api/pith-number/GFL2S4TBGFEFSLVR5Z7HMXPYD2/graph.json","fetch_events":"https://pith.science/api/pith-number/GFL2S4TBGFEFSLVR5Z7HMXPYD2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GFL2S4TBGFEFSLVR5Z7HMXPYD2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GFL2S4TBGFEFSLVR5Z7HMXPYD2/action/storage_attestation","attest_author":"https://pith.science/pith/GFL2S4TBGFEFSLVR5Z7HMXPYD2/action/author_attestation","sign_citation":"https://pith.science/pith/GFL2S4TBGFEFSLVR5Z7HMXPYD2/action/citation_signature","submit_replication":"https://pith.science/pith/GFL2S4TBGFEFSLVR5Z7HMXPYD2/action/replication_record"}},"created_at":"2026-05-18T01:41:19.956370+00:00","updated_at":"2026-05-18T01:41:19.956370+00:00"}