HATS-13b and HATS-14b: two transiting hot Jupiters from the HATSouth survey ^{⋆,⋆⋆,⋆⋆⋆}

¹ Max Planck Institute for Astronomy, Königstuhl 17, 69117 Heidelberg, Germany
e-mail: mancini@mpia.de
² Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
³ Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
⁴ Millennium Institute of Astrophysics, Av. Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
⁵ Observatoire Astronomique de l’Université de Genève, 51 Ch. des Maillettes, 1290 Versoix, Switzerland
⁶ The Australian National University, 0200 Canberra, Australia
⁷ Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, 152-8551 Tokyo, Japan
⁸ Perth Exoplanet Survey Telescope, Perth, Australia
⁹ Exoplanetary Science Group, School of Physics, University of New South Wales, Sydney, NSW 2052, Australia
¹⁰ Exoplanetary Science at UNSW, Australian Centre for Astrobiology, School of Physics, UNSW, Australia
¹¹ Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
¹² Hungarian Astronomical Association, 1121 Budapest, Hungary

Received: 10 March 2015
Accepted: 22 May 2015

Abstract

We report the discovery of HATS-13b and HATS-14b, which are two hot-Jupiter transiting planets discovered by the HATSouth survey. The host stars are quite similar to each other (HATS-13: V = 13.9 mag, M_⋆ = 0.96 M_⊙, R_⋆ = 0.89 R_⊙, T_eff ≈ 5500 K, [Fe/H] = 0.05; HATS-14: V = 13.8 mag, M_⋆ = 0.97 M_⊙, R_⋆ = 0.93 R_⊙, T_eff ≈ 5350 K, [Fe/H] = 0.33) and both the planets orbit around them with a period of ~3 days and a separation of ~0.04 au. However, even though they are irradiated in a similar way, the physical characteristics of the two planets are very different. HATS-13b, with a mass of M_p = 0.543 ± 0.072 M_J and a radius of R_p = 1.212 ± 0.035 R_J, appears as an inflated planet, while HATS-14b, having a mass of M_p = 1.071 ± 0.070 M_J and a radius of R_p = 1.039 ± 0.032 R_J, is only slightly larger in radius than Jupiter.