{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:DH6RIQPBETOMGMD4IEM3MJKC7A","short_pith_number":"pith:DH6RIQPB","schema_version":"1.0","canonical_sha256":"19fd1441e124dcc3307c4119b62542f833bf6ca04ffefc78006ab5304ab4dfc4","source":{"kind":"arxiv","id":"2606.25648","version":1},"attestation_state":"computed","paper":{"title":"Long-term Orbital Period Variations of the Eclipsing Dwarf Nova HT Cas","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Ali Takey, Aykut Ozdonmez, Burak Batuhan G\\\"urbulak, Ergun Ege, Huseyin Er, Ilham Nasiroglu, M. Abdelkareem, M. Emir Kenger, Murat Tekkesinoglu, Nazl{\\i} Karaman","submitted_at":"2026-06-24T09:57:34Z","abstract_excerpt":"We present a comprehensive analysis of the long-term orbital period variations in the short-period eclipsing dwarf nova HT Cas. By combining our new high-precision mid-eclipse times obtained between 2015 and 2026 with archival data, we constructed an updated $O-C$ diagram spanning a $\\sim$48-years. Statistical analysis confirms outbursts do not cause systematic phase shifts, validating the use of all activity states. Through MCMC modeling, we show that the $O-C$ variations require a two-companion configuration. A free-eccentricity LTT model captures the variations but yields unconstrained post"},"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":"2606.25648","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-06-24T09:57:34Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"9f0d6d4bfb5026eeeeebee5dbfb2b5498ff5aaa68d0834f6f8e8c3f8fee487ec","abstract_canon_sha256":"5e49e31a6112a520d69cdd8503b0eb13fc4b8c5faf2f1b48d3a5f96124d89400"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-25T01:18:11.625863Z","signature_b64":"Dqnd6uP8cf7zPIeiNXcyeBjfl7IBmc84ACnlQcUHGYTYe2B8pSLuNboOuMsw8RIf+dpmt459uJv86G0rAjEtCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"19fd1441e124dcc3307c4119b62542f833bf6ca04ffefc78006ab5304ab4dfc4","last_reissued_at":"2026-06-25T01:18:11.625438Z","signature_status":"signed_v1","first_computed_at":"2026-06-25T01:18:11.625438Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Long-term Orbital Period Variations of the Eclipsing Dwarf Nova HT Cas","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Ali Takey, Aykut Ozdonmez, Burak Batuhan G\\\"urbulak, Ergun Ege, Huseyin Er, Ilham Nasiroglu, M. Abdelkareem, M. Emir Kenger, Murat Tekkesinoglu, Nazl{\\i} Karaman","submitted_at":"2026-06-24T09:57:34Z","abstract_excerpt":"We present a comprehensive analysis of the long-term orbital period variations in the short-period eclipsing dwarf nova HT Cas. By combining our new high-precision mid-eclipse times obtained between 2015 and 2026 with archival data, we constructed an updated $O-C$ diagram spanning a $\\sim$48-years. Statistical analysis confirms outbursts do not cause systematic phase shifts, validating the use of all activity states. Through MCMC modeling, we show that the $O-C$ variations require a two-companion configuration. A free-eccentricity LTT model captures the variations but yields unconstrained post"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.25648","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/2606.25648/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":"2606.25648","created_at":"2026-06-25T01:18:11.625500+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.25648v1","created_at":"2026-06-25T01:18:11.625500+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.25648","created_at":"2026-06-25T01:18:11.625500+00:00"},{"alias_kind":"pith_short_12","alias_value":"DH6RIQPBETOM","created_at":"2026-06-25T01:18:11.625500+00:00"},{"alias_kind":"pith_short_16","alias_value":"DH6RIQPBETOMGMD4","created_at":"2026-06-25T01:18:11.625500+00:00"},{"alias_kind":"pith_short_8","alias_value":"DH6RIQPB","created_at":"2026-06-25T01:18:11.625500+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/DH6RIQPBETOMGMD4IEM3MJKC7A","json":"https://pith.science/pith/DH6RIQPBETOMGMD4IEM3MJKC7A.json","graph_json":"https://pith.science/api/pith-number/DH6RIQPBETOMGMD4IEM3MJKC7A/graph.json","events_json":"https://pith.science/api/pith-number/DH6RIQPBETOMGMD4IEM3MJKC7A/events.json","paper":"https://pith.science/paper/DH6RIQPB"},"agent_actions":{"view_html":"https://pith.science/pith/DH6RIQPBETOMGMD4IEM3MJKC7A","download_json":"https://pith.science/pith/DH6RIQPBETOMGMD4IEM3MJKC7A.json","view_paper":"https://pith.science/paper/DH6RIQPB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.25648&json=true","fetch_graph":"https://pith.science/api/pith-number/DH6RIQPBETOMGMD4IEM3MJKC7A/graph.json","fetch_events":"https://pith.science/api/pith-number/DH6RIQPBETOMGMD4IEM3MJKC7A/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DH6RIQPBETOMGMD4IEM3MJKC7A/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DH6RIQPBETOMGMD4IEM3MJKC7A/action/storage_attestation","attest_author":"https://pith.science/pith/DH6RIQPBETOMGMD4IEM3MJKC7A/action/author_attestation","sign_citation":"https://pith.science/pith/DH6RIQPBETOMGMD4IEM3MJKC7A/action/citation_signature","submit_replication":"https://pith.science/pith/DH6RIQPBETOMGMD4IEM3MJKC7A/action/replication_record"}},"created_at":"2026-06-25T01:18:11.625500+00:00","updated_at":"2026-06-25T01:18:11.625500+00:00"}