We report the discovery of HAT-P-16b, a transiting extrasolar planet orbiting the V = 10.8 mag F8 dwarf GSC 2792-01700, with a period P = 2.775960 +- 0.000003 d, transit epoch Tc = 2455027.59293 +- 0.00031 (BJD), and transit duration 0.1276 +- 0.0013 d. The host star has a mass of 1.22 +- 0.04 Msun, radius of 1.24 +- 0.05 Rsun, effective temperature 6158 +-80 K, and metallicity [Fe/H] = +0.17 +- 0.08. The planetary companion has a mass of 4.193 +- 0.094 MJ, and radius of 1.289 +- 0.066 RJ yielding a mean density of 2.42 +- 0.35 g/cm3. Comparing these observed characteristics with recent theoretical models, we find that HAT-P-16b is consistent with a 1 Gyr H/He-dominated gas giant planet. HAT-P-16b resides in a sparsely populated region of the mass{radius diagram and has a non-zero eccentricity of e = 0.036 with a significance of 10 sigma.
@article{arxiv.1005.2009,
title = {HAT-P-16b: A 4 Mj Planet Transiting A Bright Star On An Eccentric Orbit},
author = {L. A. Buchhave and G. A. Bakos and J. D. Hartman and G. Torres and G. Kovacs and D. W. Latham and R. W. Noyes and G. A. Esquerdo and M. Everett and A. W. Howard and G. W. Marcy and D. A. Fischer and J. A. Johnson and J. Andersen and G. Furesz and G. Perumpilly and D. D. Sasselov and R. P. Stefanik and B. Beky and J. Lazar and I. Papp and P. Sari},
journal= {arXiv preprint arXiv:1005.2009},
year = {2015}
}