{"paper":{"title":"Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by the Galactic Plane eXoplanet (GPX) survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"A. A. Mitrofanova, A. Belinski, A. Beskakotov, A. Bieryla, A. Bonfanti, A. Marchini, A. Popov, A. Vanderburg, A. W\\\"unsche, A. Y. Burdanov, C. E. Henze, \\c{S}. Torun, D. A. Rastegaev, D. Charbonneau, D. J. Stevens, D. Molina, D. W. Latham, E. D. Kuznetsov, E. Girardin, E. Jehin, E. L. N. Jensen, E. Pak\\v{s}tien\\.e, E. Sokov, E. V. Quintana, F. Grau Horta, F. J. Pozuelos, F. Kashaev, F. Kiefer, F. Salvaggio, G. H\\'ebrard, G. Ricker, G. Valyavin, I. Sokova, J. Garlitz, J. M. Almenara, J. M. Jenkins, J. Pepper, K. A. Collins, K. Antonyuk, K. Barkaoui, K. G. Stassun, K. Ivanov, M. Banfi, M. Bretton, M. D. Joner, M. Gillon, M. Spencer, M. Tsantaki, \\\"O. Ba\\c{s}t\\\"urk, O. D. S. Demangeon, P. A. Wilson, P. Benni, R. Naves, R. Papini, R. Vanderspek, S. Dalal, S. E. Mullally, S. Seager, S. Shadick, S. Yal\\c{c}{\\i}nkaya, T. Kim, V.-P. Hentunen, V. V. Dyachenko, V. V. Krushinsky, W. Kang, Y. Jongen, Z. Benkhaldoun","submitted_at":"2020-09-24T18:46:03Z","abstract_excerpt":"We announce the discovery of GPX-1 b, a transiting brown dwarf with a mass of $19.7\\pm 1.6$ $M_{\\mathrm{Jup}}$ and a radius of $1.47\\pm0.10$ $R_{\\mathrm{Jup}}$, the first sub-stellar object discovered by the Galactic Plane eXoplanet (GPX) survey. The brown dwarf transits a moderately bright ($V$ = 12.3 mag) fast-rotating F-type star with a projected rotational velocity $v\\sin{ i_*}=40\\pm10$ km/s. We use the isochrone placement algorithm to characterize the host star, which has effective temperature $7000\\pm200$ K, mass $1.68\\pm0.10$ $M_{\\mathrm{Sun}}$, radius $1.56\\pm0.10$ $R_{\\mathrm{Sun}}$ a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.11899","kind":"arxiv","version":2},"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/2009.11899/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"}