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Csubry","submitted_at":"2013-04-08T09:20:38Z","abstract_excerpt":"We report the discovery of HATS-2b, the second transiting extrasolar planet detected by the HATSouth survey. HATS-2b is moving on a circular orbit around a V=13.6 mag, K-type dwarf star (GSC 6665-00236), at a separation of 0.0230 \\pm 0.0003 AU and with a period of 1.3541 days. The planetary parameters have been robustly determined using a simultaneous fit of the HATSouth, MPG/ESO~2.2\\,m/GROND, Faulkes Telescope South/Spectral transit photometry and MPG/ESO~2.2\\,m/FEROS, Euler~1.2\\,m/CORALIE, AAT~3.9\\,m/CYCLOPS radial-velocity measurements. 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Jordan, B. Beky, B. C. Addison, B. Csak, B. Schmidt, C. G. Tinney, D. Bayliss, D. J. Wright, G. B. Bakos, G. Zhou, I. Papp, J. D. Hartman, J. Lazar, K. Penev, L. A. Buchhave, L. Mancini, M. Mohler-Fischer, M. Rabus, N. Espinoza, N. Nikolov, P. Conroy, P. Sari, R. Brahm, R. W. Noyes, T. Henning, V. Suc, Z. Csubry","submitted_at":"2013-04-08T09:20:38Z","abstract_excerpt":"We report the discovery of HATS-2b, the second transiting extrasolar planet detected by the HATSouth survey. HATS-2b is moving on a circular orbit around a V=13.6 mag, K-type dwarf star (GSC 6665-00236), at a separation of 0.0230 \\pm 0.0003 AU and with a period of 1.3541 days. The planetary parameters have been robustly determined using a simultaneous fit of the HATSouth, MPG/ESO~2.2\\,m/GROND, Faulkes Telescope South/Spectral transit photometry and MPG/ESO~2.2\\,m/FEROS, Euler~1.2\\,m/CORALIE, AAT~3.9\\,m/CYCLOPS radial-velocity measurements. 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