Three irradiated and bloated hot Jupiters:. WASP-76b, WASP-82b, and WASP-90b

We report on three new transiting hot Jupiter planets, discovered from the WASP surveys, which we combine with radial velocities from OHP/ SOPHIE and Euler/CORALIE and photometry from Euler and TRAPPIST. The planets WASP-76b, WASP-82b, and WASP-90b are all inflated, with radii of 1.7-1.8 R-Jup. All three orbit hot stars, of type F5-F7, with orbits of 1.8-3.9 d, and all three stars have evolved, post-main-sequence radii (1.7-2.2 R-circle dot). Thus the three planets fit a known trend of hot Jupiters that receive high levels of irradiation being highly inflated. We caution, though, about the presence of a selection effect, in that non-inflated planets around similar to 2 R-circle dot post-MS stars can often produce transits too shallow to be detected by the ground-based surveys that have found the majority of transiting hot Jupiters.

[1]  A. Cameron,et al.  Accurate spectroscopic parameters of WASP planet host stars , 2012, 1210.5931.

[2]  R. Street,et al.  WASP-41b: A Transiting Hot Jupiter Planet Orbiting a Magnetically Active G8V Star , 2010, 1012.2977.

[3]  A. Santerne,et al.  WASP-71b : a bloated hot Jupiter in a 2.9-day, prograde orbit around an evolved F8 star , 2012, 1211.3045.

[4]  R. G. West,et al.  WASP-52b, WASP-58b, WASP-59b, and WASP-60b: four new transiting close-in giant planets , 2012, 1211.0810.

[5]  R. G. West,et al.  WASP-42 b and WASP-49 b: two new transiting sub-Jupiters , 2012, 1205.2757.

[6]  S. Udry,et al.  Transiting planets from WASP-South, Euler, and TRAPPIST - WASP-68 b, WASP-73 b, and WASP-88 b, three hot Jupiters transiting evolved solar-type stars , 2013, 1312.1827.

[7]  B. Smalley,et al.  Accurate fundamental parameters for 23 bright solar-type stars , 2010, 1002.4268.

[8]  Jonathan J. Fortney,et al.  THE HEAVY-ELEMENT MASSES OF EXTRASOLAR GIANT PLANETS, REVEALED , 2011, 1105.0024.

[9]  L. Hebb,et al.  WASP-1b and WASP-2b: Two new transiting exoplanets detected with SuperWASP and SOPHIE , 2006, astro-ph/0609688.

[10]  A. Triaud.  The time dependence of hot Jupiters' orbital inclinations , 2011, 1109.5813.

[11]  P. Quirion,et al.  Accurate fundamental parameters and detailed abundance patterns from spectroscopy of 93 solar-type Kepler targets , 2012 .

[12]  Jozsef Lazar,et al.  System Description and First Light Curves of the Hungarian Automated Telescope, an Autonomous Observatory for Variability Search , 2002, astro-ph/0206001.

[13]  R. G. West,et al.  WASP-17b: AN ULTRA-LOW DENSITY PLANET IN A PROBABLE RETROGRADE ORBIT , 2009, 0908.1553.

[14]  Sofia Randich,et al.  Time scales of Li evolution: A Homogeneous analysis of open clusters from ZAMS to late-MS , 2005 .

[15]  R. G. West,et al.  WASP-44b, WASP-45b and WASP-46b: three short-period, transiting extrasolar planets , 2011, 1105.3179.

[16]  R. G. West,et al.  Efficient identification of exoplanetary transit candidates from SuperWASP light curves , 2007, 0707.0417.

[17]  B. J. Fulton,et al.  HAT-P-39b–HAT-P-41b: THREE HIGHLY INFLATED TRANSITING HOT JUPITERS , 2012, 1207.3344.

[18]  R. G. West,et al.  WASP-3b: a strongly irradiated transiting gas-giant planet , 2007, 0711.0126.

[19]  Benjamin Levrard,et al.  Is tidal heating sufficient to explain bloated exoplanets? Consistent calculations accounting for finite initial eccentricity , 2010, 1004.0463.

[20]  Sara Seager,et al.  LACK OF INFLATED RADII FOR KEPLER GIANT PLANET CANDIDATES RECEIVING MODEST STELLAR IRRADIATION , 2011, 1110.6180.

[21]  R. G. West,et al.  WASP-80b: a gas giant transiting a cool dwarf , 2013, 1303.0254.

[22]  Konstantin Batygin,et al.  INFLATING HOT JUPITERS WITH OHMIC DISSIPATION , 2010, 1002.3650.

[23]  R. G. West,et al.  Transiting hot Jupiters from WASP-South, Euler and TRAPPIST : WASP-95b to WASP-101b , 2013, 1310.5630.

[24]  L. Girardi,et al.  Evolutionary tracks and isochrones for low- and intermediate-mass stars: From 0.15 to 7 , and from to 0.03 , 1999, astro-ph/9910164.

[25]  E. Böhm-Vitense.  Rotation and Lithium Surface Abundances, Revisited , 2004 .

[26]  B. Enoch,et al.  The WASP Project and the SuperWASP Cameras , 2006, astro-ph/0608454.

[27]  Tristan Guillot,et al.  Atmospheric circulation and tides of ``51 Pegasus b-like'' planets , 2002 .

[28]  Howard Isaacson,et al.  THE MASS OF KOI-94d AND A RELATION FOR PLANET RADIUS, MASS, AND INCIDENT FLUX , 2013, 1303.2150.

[29]  John Southworth,et al.  Homogeneous studies of transiting extrasolar planets – IV. Thirty systems with space-based light curves , 2011, 1107.1235.

[30]  S. Udry,et al.  WASP-64 b and WASP-72 b : two new transiting highly irradiated giant planets , 2012, 1210.4257.

[31]  D. W. Latham,et al.  HAT-P-32b AND HAT-P-33b: TWO HIGHLY INFLATED HOT JUPITERS TRANSITING HIGH-JITTER STARS , 2011, 1106.1212.

[32]  A. Santerne,et al.  SOPHIE velocimetry of Kepler transit candidates , VI. An additional companion in the KOI-13 system , 2012, 1207.1715.

[33]  R. G. West,et al.  WASP-78b and WASP-79b: two highly-bloated hot Jupiter-mass exoplanets orbiting F-type stars in Eridanus , 2012, 1206.1177.

[34]  S. Barnes.  Accepted for publication in The Astrophysical Journal Ages for illustrative field stars using gyrochronology: viability, limitations and errors , 2022 .