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Three Hot-Jupiters on the upper edge of the mass-radius distribution: WASP-177, WASP-181 and WASP-183

Maxted; Smalley; Hellier

Three Hot-Jupiters on the upper edge of the mass-radius distribution: WASP-177, WASP-181 and WASP-183 Thumbnail


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Abstract

We present the discovery of 3 transiting planets from the WASP survey, two hot-Jupiters: WASP-177 b (~0.5 MJup, ~1.6 RJup) in a 3.07-d orbit of a V = 12.6 K2 star, WASP-183 b (~0.5 MJup, ~1.5 RJup) in a 4.11-d orbit of a V = 12.8 G9/K0 star; and one hot-Saturn planet WASP-181 b (~0.3 MJup, ~1.2 RJup) 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*, 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.

Acceptance Date Mar 14, 2019
Publication Date Jun 1, 2019
Publicly Available Date Mar 28, 2024
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Publisher Oxford University Press
Pages 5790-5799
DOI https://doi.org/10.1093/mnras/stz742
Keywords planets and satellites, detection, individual, WASP-177b, WASP-181b, individual, WASP-183b
Publisher URL https://doi.org/10.1093/mnras/stz742

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