Five transiting hot Jupiters discovered using WASP-South, Euler, and TRAPPIST: WASP-119 b, WASP-124 b, WASP-126 b, WASP-129 b, and WASP-133 b^⋆

¹ Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK
e-mail: p.maxted@keele.ac.uk
² SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife, KY16 9SS, UK
³ Institut d’Astrophysique et de Géophysique, Université de Liège, Allée du 6 Août, 17, Bât. B5C, Liège 1, Belgium
⁴ Space Research Institute, Austrian Academy of Sciences, Schmiedlstr. 6, 8042 Graz, Austria
⁵ Observatoire Astronomique de l’Université de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland
⁶ Cavendish Laboratory, J J Thomson Avenue, Cambridge, CB3 0HE, UK
⁷ Department of Physics, University of Warwick, Coventry CV4 7AL, UK
⁸ Institute of Planetary Research, German Aerospace Center, Rutherfordstrasse 2, 12489 Berlin, Germany
⁹ Centre for Planetary Sciences, University of Toronto at Scarborough, 1265 Military Trail, Toronto, ON, M1C 1A4, Canada
¹⁰ Department of Astronomy & Astrophysics, University of Toronto, Toronto, ON, M5S 3H4, Canada

Received: 4 February 2016
Accepted: 24 April 2016

Abstract

We have used photometry from the WASP-South instrument to identify 5 stars showing planet-like transits in their light curves. The planetary nature of the companions to these stars has been confirmed using photometry from the EulerCam instrument on the Swiss Euler 1.2-m telescope and the TRAPPIST telescope, and spectroscopy obtained with the CORALIE spectrograph. The planets discovered are hot Jupiter systems with orbital periods in the range 2.17 to 5.75 days, masses from 0.3 M_Jup to 1.2 M_Jup and with radii from 1 R_Jup to 1.5 R_Jup. These planets orbit bright stars (V = 11–13) with spectral types in the range F9 to G4. WASP-126 is the brightest planetary system in this sample and hosts a low-mass planet with a large radius (0.3 M_Jup,0.95 R_Jup), making it a good target for transmission spectroscopy. The high density of WASP-129 A suggests that it is a helium-rich star similar to HAT-P-11 A. WASP-133 A has an enhanced surface lithium abundance compared to other old G-type stars, particularly other planet host stars. These planetary systems are good targets for follow-up observations with ground-based and space-based facilities to study their atmospheric and dynamical properties.