WASP-190b: Tomographic Discovery of a Transiting Hot Jupiter
Bouchy, F.; Queloz, D.; Ségransan, D.; Collier Cameron, A.; Delrez, L.; Gillon, M.; Lendl, M.; Maxted, P. F. L.; Pollacco, D.; Udry, S.; Pepe, F.; Jehin, E.; Smalley, B.; Anderson, D. R.; Hellier, C.; Turner, O. D.; West, R. G.; Triaud, A. H. M. J.; Nielsen, L. D.; Brown, D. J. A.; Burdanov, A.; Thompson, S.; Temple, L. Y.; Almleaky, Y.; Murray, C.
United Kingdom, Saudi Arabia, Switzerland, Belgium, Austria
Abstract
We report the discovery of WASP-190b, an exoplanet on a 5.37 day orbit around a mildly evolved F6 IV-V star with V = 11.7, {T}eff} = 6400 ± 100 K, M * = 1.35 ± 0.05 M ⊙, and R * = 1.6 ± 0.1 R ⊙. The planet has a radius of R P = 1.15 ± 0.09 R Jup and a mass of M P = 1.0 ± 0.1 M Jup, making it a mildly inflated hot Jupiter. It is the first hot Jupiter confirmed via Doppler tomography with an orbital period of >5 days. The orbit is also marginally misaligned with respect to the stellar rotation, with λ = 21° ± 6° measured using Doppler tomography.