{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:VWKWM7YKUDJPMDOYHOYJZXVV24","short_pith_number":"pith:VWKWM7YK","schema_version":"1.0","canonical_sha256":"ad95667f0aa0d2f60dd83bb09cdeb5d72d466b72bfafec7724d7fc448d60a923","source":{"kind":"arxiv","id":"1812.08086","version":4},"attestation_state":"computed","paper":{"title":"The Time-Domain Spectroscopic Survey: Radial Velocity Variability in Dwarf Carbon Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Benjamin R. Roulston, Carles Badenes, Chelsea L. MacLeod, Donald P. Schneider, Joel R. Brownstein, John J. Ruan, Keivan G. Stassun, Paul J. Green, Scott F. Anderson","submitted_at":"2018-12-19T17:01:16Z","abstract_excerpt":"Dwarf carbon (dC) stars, main sequence stars showing carbon molecular bands, were initially thought to be an oxymoron since only AGB stars dredge carbon into their atmospheres. Mass transfer from a former AGB companion that has since faded to a white dwarf seems the most likely explanation. Indeed, a few types of giants known to show anomalous abundances --- notably, the CH, Ba and CEMP-s stars --- are known to have a high binary frequency. The dC stars may be the enhanced-abundance progenitors of most, if not all, of these systems, but this requires demonstrating a high binary frequency for d"},"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":"1812.08086","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-12-19T17:01:16Z","cross_cats_sorted":[],"title_canon_sha256":"1524a9d67f4726f9a0c4498418d9bc33634cfa1a7f440bc13c2d1f581e03abda","abstract_canon_sha256":"fda6d3bf26ccc887d136a7eacddbd82cf45204e0b313895e40eeb3ee9ae10659"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:58.049438Z","signature_b64":"9NuB0d4DlpMIxD4DjLWQFrLm+N7GJxLGvGXH6ciiz4dzHpx7yLNroiDrh6ifadWlxSZhzgOqVvghlMwUDKTEBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad95667f0aa0d2f60dd83bb09cdeb5d72d466b72bfafec7724d7fc448d60a923","last_reissued_at":"2026-05-17T23:44:58.048703Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:58.048703Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Time-Domain Spectroscopic Survey: Radial Velocity Variability in Dwarf Carbon Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Benjamin R. Roulston, Carles Badenes, Chelsea L. MacLeod, Donald P. Schneider, Joel R. Brownstein, John J. Ruan, Keivan G. Stassun, Paul J. Green, Scott F. Anderson","submitted_at":"2018-12-19T17:01:16Z","abstract_excerpt":"Dwarf carbon (dC) stars, main sequence stars showing carbon molecular bands, were initially thought to be an oxymoron since only AGB stars dredge carbon into their atmospheres. Mass transfer from a former AGB companion that has since faded to a white dwarf seems the most likely explanation. Indeed, a few types of giants known to show anomalous abundances --- notably, the CH, Ba and CEMP-s stars --- are known to have a high binary frequency. The dC stars may be the enhanced-abundance progenitors of most, if not all, of these systems, but this requires demonstrating a high binary frequency for d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.08086","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":""},"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":"1812.08086","created_at":"2026-05-17T23:44:58.048817+00:00"},{"alias_kind":"arxiv_version","alias_value":"1812.08086v4","created_at":"2026-05-17T23:44:58.048817+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.08086","created_at":"2026-05-17T23:44:58.048817+00:00"},{"alias_kind":"pith_short_12","alias_value":"VWKWM7YKUDJP","created_at":"2026-05-18T12:32:59.047623+00:00"},{"alias_kind":"pith_short_16","alias_value":"VWKWM7YKUDJPMDOY","created_at":"2026-05-18T12:32:59.047623+00:00"},{"alias_kind":"pith_short_8","alias_value":"VWKWM7YK","created_at":"2026-05-18T12:32:59.047623+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/VWKWM7YKUDJPMDOYHOYJZXVV24","json":"https://pith.science/pith/VWKWM7YKUDJPMDOYHOYJZXVV24.json","graph_json":"https://pith.science/api/pith-number/VWKWM7YKUDJPMDOYHOYJZXVV24/graph.json","events_json":"https://pith.science/api/pith-number/VWKWM7YKUDJPMDOYHOYJZXVV24/events.json","paper":"https://pith.science/paper/VWKWM7YK"},"agent_actions":{"view_html":"https://pith.science/pith/VWKWM7YKUDJPMDOYHOYJZXVV24","download_json":"https://pith.science/pith/VWKWM7YKUDJPMDOYHOYJZXVV24.json","view_paper":"https://pith.science/paper/VWKWM7YK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1812.08086&json=true","fetch_graph":"https://pith.science/api/pith-number/VWKWM7YKUDJPMDOYHOYJZXVV24/graph.json","fetch_events":"https://pith.science/api/pith-number/VWKWM7YKUDJPMDOYHOYJZXVV24/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VWKWM7YKUDJPMDOYHOYJZXVV24/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VWKWM7YKUDJPMDOYHOYJZXVV24/action/storage_attestation","attest_author":"https://pith.science/pith/VWKWM7YKUDJPMDOYHOYJZXVV24/action/author_attestation","sign_citation":"https://pith.science/pith/VWKWM7YKUDJPMDOYHOYJZXVV24/action/citation_signature","submit_replication":"https://pith.science/pith/VWKWM7YKUDJPMDOYHOYJZXVV24/action/replication_record"}},"created_at":"2026-05-17T23:44:58.048817+00:00","updated_at":"2026-05-17T23:44:58.048817+00:00"}