{"paper":{"title":"BK Lyncis: The Oldest Old Nova?... And a Bellwether for Cataclysmic-Variable Evolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"(2) Univ. de Huelva, (3) Center for Backyard Astrophysics, (4) King's Univ. Coll.), Anthony Kroes (3), Arto Oksanen (3), Brian Martin (4), David Boyd (3), David Cejudo (3), David Harvey (3), David Skillman (3), Enrique de Miguel (2), Etienne Morelle (3), Franz-Josef Hambsch (3), George Roberts (3), Helena Uthas (1), Jerry Foote (3), John Rock (3), Jonathan Kemp (1), Joseph Patterson (1), Joseph Ulowetz (3), Lasse Jensen (3) ((1) Columbia Univ., Richard Sabo (3), Robert Koff (3), Shawn Dvorak (3), Thomas Krajci (3), Tonny Vanmunster (3), Tut Campbell (3)","submitted_at":"2012-12-23T21:25:26Z","abstract_excerpt":"We summarize the results of a 20-year campaign to study the light curves of BK Lyncis, a nova-like star strangely located below the 2-3 hour orbital period gap in the family of cataclysmic variables. Two apparent \"superhumps\" dominate the nightly light curves - with periods 4.6% longer, and 3.0% shorter, than P_orb. The first appears to be associated with the star's brighter states (V~14), while the second appears to be present throughout and becomes very dominant in the low state (V~15.7).\n  Starting in the year 2005, the star's light curve became indistinguishable from that of a dwarf nova -"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.5836","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"}