{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:GT625THLWOVXTVCRGSTJMCYM4B","short_pith_number":"pith:GT625THL","schema_version":"1.0","canonical_sha256":"34fdaeccebb3ab79d45134a6960b0ce07ab518b03a059aedf738c6686d92a568","source":{"kind":"arxiv","id":"1804.07138","version":1},"attestation_state":"computed","paper":{"title":"A 15.7-Minute AM CVn Binary Discovered in K2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. C. Kaiser, D. I. Sahman, D. T. H. Steeghs, E. Breedt, E. Dennihy, J. J. Hermes, J. S. Reding, J. T. Fuchs, Keaton J. Bell, M. J. Green, N. P. Gentile Fusillo, P. Kerry, R. P. Ashley, S. G. Parsons, S. P. Littlefair, T. R. Marsh, V. S. Dhillon","submitted_at":"2018-04-19T13:16:13Z","abstract_excerpt":"We present the discovery of SDSS J135154.46-064309.0, a short-period variable observed using 30-minute cadence photometry in K2 Campaign 6. Follow-up spectroscopy and high-speed photometry support a classification as a new member of the rare class of ultracompact accreting binaries known as AM CVn stars. The spectroscopic orbital period of $15.65 \\pm 0.12$\\,minutes makes this system the fourth-shortest period AM CVn known, and the second system of this type to be discovered by the Kepler spacecraft. The K2 data show photometric periods at $15.7306 \\pm 0.0003$\\,minutes, $16.1121 \\pm 0.0004$\\,mi"},"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":"1804.07138","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-19T13:16:13Z","cross_cats_sorted":[],"title_canon_sha256":"969c6b5586333413c04f1e878f45cccaabcc0478b444ea404b3a879107072c63","abstract_canon_sha256":"a0551f719fb514e35c9dbe34518368c1b766711fec2255166cd62cf8bd19ca87"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:17:02.981829Z","signature_b64":"tWvj1nF2S86yyX+OjUVJyHpo0W4Vtr3shSckILIAvqAAUyr7s37SIDb4AkiuIZLfajhE3iv08fVTL9ipRasyDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34fdaeccebb3ab79d45134a6960b0ce07ab518b03a059aedf738c6686d92a568","last_reissued_at":"2026-05-18T00:17:02.981065Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:17:02.981065Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A 15.7-Minute AM CVn Binary Discovered in K2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. C. Kaiser, D. I. Sahman, D. T. H. Steeghs, E. Breedt, E. Dennihy, J. J. Hermes, J. S. Reding, J. T. Fuchs, Keaton J. Bell, M. J. Green, N. P. Gentile Fusillo, P. Kerry, R. P. Ashley, S. G. Parsons, S. P. Littlefair, T. R. Marsh, V. S. Dhillon","submitted_at":"2018-04-19T13:16:13Z","abstract_excerpt":"We present the discovery of SDSS J135154.46-064309.0, a short-period variable observed using 30-minute cadence photometry in K2 Campaign 6. Follow-up spectroscopy and high-speed photometry support a classification as a new member of the rare class of ultracompact accreting binaries known as AM CVn stars. The spectroscopic orbital period of $15.65 \\pm 0.12$\\,minutes makes this system the fourth-shortest period AM CVn known, and the second system of this type to be discovered by the Kepler spacecraft. The K2 data show photometric periods at $15.7306 \\pm 0.0003$\\,minutes, $16.1121 \\pm 0.0004$\\,mi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07138","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":"1804.07138","created_at":"2026-05-18T00:17:02.981190+00:00"},{"alias_kind":"arxiv_version","alias_value":"1804.07138v1","created_at":"2026-05-18T00:17:02.981190+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.07138","created_at":"2026-05-18T00:17:02.981190+00:00"},{"alias_kind":"pith_short_12","alias_value":"GT625THLWOVX","created_at":"2026-05-18T12:32:25.280505+00:00"},{"alias_kind":"pith_short_16","alias_value":"GT625THLWOVXTVCR","created_at":"2026-05-18T12:32:25.280505+00:00"},{"alias_kind":"pith_short_8","alias_value":"GT625THL","created_at":"2026-05-18T12:32:25.280505+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/GT625THLWOVXTVCRGSTJMCYM4B","json":"https://pith.science/pith/GT625THLWOVXTVCRGSTJMCYM4B.json","graph_json":"https://pith.science/api/pith-number/GT625THLWOVXTVCRGSTJMCYM4B/graph.json","events_json":"https://pith.science/api/pith-number/GT625THLWOVXTVCRGSTJMCYM4B/events.json","paper":"https://pith.science/paper/GT625THL"},"agent_actions":{"view_html":"https://pith.science/pith/GT625THLWOVXTVCRGSTJMCYM4B","download_json":"https://pith.science/pith/GT625THLWOVXTVCRGSTJMCYM4B.json","view_paper":"https://pith.science/paper/GT625THL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1804.07138&json=true","fetch_graph":"https://pith.science/api/pith-number/GT625THLWOVXTVCRGSTJMCYM4B/graph.json","fetch_events":"https://pith.science/api/pith-number/GT625THLWOVXTVCRGSTJMCYM4B/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GT625THLWOVXTVCRGSTJMCYM4B/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GT625THLWOVXTVCRGSTJMCYM4B/action/storage_attestation","attest_author":"https://pith.science/pith/GT625THLWOVXTVCRGSTJMCYM4B/action/author_attestation","sign_citation":"https://pith.science/pith/GT625THLWOVXTVCRGSTJMCYM4B/action/citation_signature","submit_replication":"https://pith.science/pith/GT625THLWOVXTVCRGSTJMCYM4B/action/replication_record"}},"created_at":"2026-05-18T00:17:02.981190+00:00","updated_at":"2026-05-18T00:17:02.981190+00:00"}