HAT-P-49b: A 1.7 M_J Planet Transiting a Bright 1.5 M_S F-Star

astro-ph.EP

/ Authors

A. Bieryla, J. D. Hartman, G. A. Bakos, W. Bhatti, G. Kovacs, I. Boisse, D. W. Latham, L. A. Buchhave, Z. Csubry, K. Penev

and 11 more authors

M. de Val-Borro, B. Beky, E. Falco, G. Torres, R. W. Noyes, P. Berlind, M. C. Calkins, G. A. Esquerdo, J. Lazar, I. Papp, P. Sari

/ Abstract

We report the discovery of the transiting extrasolar planet HAT-P-49b. The planet transits the bright (V = 10.3) slightly evolved F-star HD 340099 with a mass of 1.54M_S and a radius of 1.83 R_S. HAT-P-49b is orbiting one of the 25 brightest stars to host a transiting planet which makes this a favorable candidate for detailed follow-up. This system is an especially strong target for Rossiter- McLaughlin follow-up due to the fast rotation of the host star, 16 km/s. The planetary companion has a period of 2.6915 d, mass of 1.73 M_J and radius of 1.41 R_J. The planetary characteristics are consistent with that of a classical hot Jupiter but we note that this is the fourth most massive star to host a transiting planet with both M_p and R_p well determined.