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27 April 2024

» arxiv » 1811.5742

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WASP-190b: Tomographic discovery of a transiting hot Jupiter
L. Y. Temple ; C. Hellier ; D.R. Anderson ; F. Bouchy ; D.J.A. Brown ; A. Burdanov ; A. Collier Cameron ; L. Delrez ; M. Gillon ; E. Jehin ; M. Lendl ; P.F.L. Maxted ; L. D. Nielsen ; F. Pepe ; D. Pollacco ; D. Queloz ; D. Ségransan ; B. Smalley ; A.H.M.J. Triaud ; O.D. Turner ; S. Udry ; R.G. West ;
Date:	14 Nov 2018
Abstract:	We report the discovery of WASP-190b, an exoplanet on a 5.37-day orbit around an inflated F6 IV-V star with T_eff = 6400 $pm$ 100 K, M$_{}$ = 1.35 $pm$ 0.05 M_sun and R$_{}$ = 1.6 $pm$ 0.1 R_sun. The planet has a radius of R_p = 1.15 $pm$ 0.09 R_Jup and a mass of M_p = 1.0 $pm$ 0.1 M_Jup, making it a mildly inflated hot Jupiter. The orbit is also marginally misaligned with respect to the stellar rotation, with $lambda$ = 21 $pm$ 6$^{circ}$ measured using Doppler tomography. We compare a Rossiter-McLaughlin analysis (involving radial velocity measurements) with the Doppler tomography method, and find that the latter provides a better constraint on $vsini_{*}$ and $lambda$.
Source:	arXiv, 1811.5742
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