{"paper":{"title":"Dynamical masses of a nova-like variable on the edge of the period gap","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. T. G\\\"ansicke (Warwick), D. Koester (Kiel), D. Rodr\\'iguez (Guadarrama Obs.), D. Steeghs (Warwick), I. G. Mart\\'inez-Pais (IAC/ULL), J. Castellano (Rodeno Obs.), K. S. Long (STScI), M. A. P. Torres (SRON), M. Armas Padilla (IAC/ULL), M. R. Schreiber (Valpara\\'iso), P. Rodr\\'iguez-Gil (IAC/ULL), R. Schwarz (AIP), T. R. Marsh (Warwick), T. Shahbaz (IAC/ULL), V. S. Dhillon (Sheffield)","submitted_at":"2015-06-09T16:15:28Z","abstract_excerpt":"We present the first dynamical determination of the binary parameters of an eclipsing SW Sextantis star in the 3-4 hour orbital period range during a low state. We obtained time-resolved optical spectroscopy and photometry of HS 0220+0603 during its 2004-2005 low brightness state, as revealed in the combined SMARTS, IAC80 and M1 Group long-term optical light curve.\n  The optical spectra taken during primary eclipse reveal a secondary star spectral type of M5.5 $\\pm$ 0.5 as derived from molecular band-head indices. The spectra also provide the first detection of a DAB white dwarf in a cataclysm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.02980","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"}