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Collins, K. Barkaoui, L. Florian, M. Gillon, M.G. Scott, M.J. Hooton, M. Stalport, M. Timmermans, P. Niraula, P.P. Pedersen, R.P. Schwarz, S.B. Howell, S. Deveny, S.Seager, S. Z\\'u\\~niga-Fern\\'andez, T. Gan, T.W. Carmichael, Y. G\\'omez Maqueo Chew, Y.T. Davis","submitted_at":"2025-02-27T10:11:26Z","abstract_excerpt":"We report the discovery of a transiting brown dwarf orbiting a low-mass star, TOI-6508b. Today, only ~50 transiting brown dwarfs have been discovered. TOI-6508b was first detected with data from the Transiting Exoplanet Survey Satellite (TESS) in Sectors 10, 37, and 63. Ground-based follow-up photometric data were collected with the SPECULOOS-South and LCOGT-1.0m telescopes, and RV measurements were obtained with the Near InfraRed Planet Searcher (NIRPS) spectrograph. We find that TOI-6508b has a mass of Mp=72.5+7.6-5.1MJup and a radius of Rp=1.03+/-0.03RJup. 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Burdanov, A. Fukui, A.H.M.J. Triaud, A.J. Burgasser, A. Shporer, A. Soubkiou, B.O. Demory, B. Rojas-Ayala, B.V. Rackham, C. Littlefield, C. Stockdale, C. Theissen, D. Queloz, D.R. Ciardi, D. Sebastian, E. Ducrot, E.L. Mart\\'in, E. Palle, E. Softich, F. Davoudi, F.J. Pozuelos, F. Murgas, G. Dransfield, G. Ricker, G. Srdoc, J. de Wit, J. M. Jenkins, J. Winn, K.A. Collins, K. Barkaoui, L. Florian, M. Gillon, M.G. Scott, M.J. Hooton, M. Stalport, M. Timmermans, P. Niraula, P.P. Pedersen, R.P. Schwarz, S.B. Howell, S. Deveny, S.Seager, S. Z\\'u\\~niga-Fern\\'andez, T. Gan, T.W. Carmichael, Y. G\\'omez Maqueo Chew, Y.T. Davis","submitted_at":"2025-02-27T10:11:26Z","abstract_excerpt":"We report the discovery of a transiting brown dwarf orbiting a low-mass star, TOI-6508b. Today, only ~50 transiting brown dwarfs have been discovered. TOI-6508b was first detected with data from the Transiting Exoplanet Survey Satellite (TESS) in Sectors 10, 37, and 63. 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