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24 April 2024

» arxiv » 1903.6622

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Three Hot-Jupiters on the upper edge of the mass-radius distribution: WASP-177, WASP-181 and WASP-183
Oliver D. Turner ; D.R. Anderson ; K. Barkaoui ; F. Bouchy ; Z. Benkhaldoun ; D.J.A. Brown ; A. Burdanov ; A. Collier Cameron ; E. Ducrot ; M. Gillon ; C. Hellier ; E. Jehin ; M. Lendl ; P.F.L. Maxted ; L.D. Nielsen ; F. Pepe ; D. Pollacco ; F.J. Pozuelos ; D. Queloz ; D. Segransan ; B. Smalley ; A.H.M.J. Triaud ; S. Udry ; R.G. West ;
Date:	15 Mar 2019
Abstract:	We present the discovery of 3 transiting planets from the WASP survey, two hot-Jupiters: WASP-177b (~0.5 M_Jup, ~1.6 R_Jup) in a 3.07-d orbit of a V = 12.6 K2 star, WASP-183b (~0.5 M_Jup, ~1.5 R_Jup) in a 4.11-d orbit of a V = 12.8 G9/K0 star; and one hot-Saturn planet WASP-181b (~0.3 M_Jup, ~1.2 R_Jup) in a 4.52-d orbit of a V = 12.9 G2 star. Each planet is close to the upper bound of mass-radius space and has a scaled semi-major axis, a/R_star, between 9.6 and 12.1. These lie in the transition between systems that tend to be in orbits that are well aligned with their host-star’s spin and those that show a higher dispersion.
Source:	arXiv, 1903.6622
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