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arXiv · 1811.05742

WASP-190b: Tomographic discovery of a transiting hot Jupiter

L. Y. Temple·C. Hellier·Y. Almleaky·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·C. Murray·L. D. Nielsen·F. Pepe·D. Pollacco·D. Queloz·D. Ségransan·B. Smalley·S. Thompson·A. H. M. J. Triaud·O. D. Turner·S. Udry·R. G. West
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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 $\pm$ 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. It is the first hot Jupiter confirmed via Doppler tomography with an orbital period >5 days. The orbit is also marginally misaligned with respect to the stellar rotation, with $\lambda$ = 21 $\pm$ 6$^{\circ}$ measured using Doppler tomography.

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L. Y. Temple, C. Hellier, Y. Almleaky, 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, C. Murray, L. D. Nielsen, F. Pepe, D. Pollacco, D. Queloz, D. Ségransan, B. Smalley, S. Thompson, A. H. M. J. Triaud, O. D. Turner, S. Udry, R. G. West. 2018-11-14. WASP-190b: Tomographic discovery of a transiting hot Jupiter. https://doi.org/10.3847/1538-3881%2Fab095a

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