{"paper":{"title":"PHL 1445: An eclipsing cataclysmic variable with a substellar donor near the period minimum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"(2) Department of Physics, (3) Department of Physics, (4) Astrophysics Research Institute, (5) Departmento de Fisica y Astronomia, (6) Department of Physical Sciences, (7) Department of Physics, Astronomy, Australia), C. D. J. Savoury (1), Chile, C. M. Copperwheat (4), Coventry, D. I. Sahman (1), E. Breedt (3), Exeter, I. Baraffe (2), J. Bento (7), J. Bochinski (6), J. W. Rostron (3), Liverpool, Liverpool John Moores University, L. K. Hardy (1), Macquarie University, M. C. P. Bours (3), Milton Keynes, M. J. McAllister (1), P. Kerry (1), R. L. Tunnicliffe (3) ((1) Department of Physics, S. G. Parsons (5), Sheffield, S. P. Littlefair (1), The Open University, T. R. Marsh (3), UK, Universidad de Valparaiso, University of Exeter, University of Sheffield, University of Warwick, Valparaiso, V. S. Dhillon (1)","submitted_at":"2015-04-29T15:45:10Z","abstract_excerpt":"We present high-speed, three-colour photometry of the eclipsing dwarf nova PHL 1445, which, with an orbital period of 76.3 min, lies just below the period minimum of ~82 min for cataclysmic variable stars. Averaging four eclipses reveals resolved eclipses of the white dwarf and bright spot. We determined the system parameters by fitting a parameterised eclipse model to the averaged lightcurve. We obtain a mass ratio of q = 0.087 +- 0.006 and inclination i = 85.2 +- 0.9 degrees. The primary and donor masses were found to be Mw = 0.73 +- 0.03 Msun and Md = 0.064 +- 0.005 Msun, respectively. Thro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.07899","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"}