HAT-P-50b, HAT-P-51b, HAT-P-52b, AND HAT-P-53b: THREE TRANSITING HOT JUPITERS AND A TRANSITING HOT SATURN FROM THE HATNET SURVEY

• Published in: The Astronomical journal 2015-12, Vol.150 (6), p.1-17
• Main Authors: Hartman, J D, Bhatti, W, Bakos, G A, Bieryla, A, Kovacs, G, Latham, D W, Csubry, Z, de Val-Borro, M, Penev, K, Buchhave, L A
• Format: Article
• Language: English
• Subjects: Astronomical bodies; Astrophysics; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; Circular orbits; Extrasolar planets; Gas giant planets; Jitter; JUPITER PLANET; MASS; ORBITS; PHOTOMETRY; Physics; Planets; SATURN PLANET; SPECTROSCOPY; STARS
• ISSN: 1538-3881; 0004-6256; 1538-3881
• DOI: 10.1088/0004-6256/150/6/168

We report the discovery and characterization of four transiting exoplanets by the HATNet survey. The planet HAT-P-50b has a mass of 1.35 M sub(J) and radius of 1.29 R sub(J), and orbits a bright (V = 11.8 mag) M = 1.27 M sub([middot in circle]), R = 1.70 R sub([middot in circle]) star every P = 3.1220 days. The planet HAT-P-51b has a mass of 0.31 M sub(J) and radius of 1.29 R sub(J) and orbits a V = 13.4 mag, M = 0.98 M sub([middot in circle]), R = 1.04 R sub([middot in circle]) star with a period of P = 4.2180 days. The planet HAT-P-52b has a mass of 0.82M sub(J) and radius of 1.01 R sub(J), and orbits a V = 14.1 mag, M = 0.89 M sub([middot in circle]), R = 0.89 R sub([middot in circle]) star with a period of P = 2.7536 days. The planet HAT-P-53b has a mass of 1.48 M sub(J) and radius of 1.32 R sub(J), and orbits a V = 13.7 mag, M = 1.09 M sub([middot in circle]), R = 1.21 R sub([middot in circle]) star with a period of P = 1.9616 days. All four planets are consistent with having circular orbits and have masses and radii measured to better than 10% precision. The low stellar jitter and favorable Rp/R[low *] ratio for HAT-P-51 make it a promising target for measuring the Rossiter-McLaughlin effect for a Saturn-mass planet.