Discovery of WASP-174b : Doppler tomography of a near-grazing transit
Abstract
We report the discovery and tomographic detection of WASP-174b, a planet with a near-grazing transit on a 4.23-d orbit around a V= 11.9, F6V star with [Fe/H] = 0.09 ± 0.09. The planet is in a moderately misaligned orbit with a sky-projected spin–orbit angle of λ = 31° ± 1°. This is in agreement with the known tendency for orbits around hotter stars to be misaligned. Owing to the grazing transit, the planet’s radius is uncertain with a possible range of 0.8–1.8 RJup. The planet’s mass has an upper limit of 1.3 MJup. WASP-174 is the faintest hot-Jupiter system so far confirmed by tomographic means.
Citation
Temple , L Y , Hellier , C , Almleaky , Y , Anderson , D R , Bouchy , F , Brown , D J A , Burdanov , A , Cameron , A C , Delrez , L , Gillon , M , Hall , R , Jehin , E , Lendl , M , Maxted , P F L , Nielsen , L D , Pepe , F , Pollacco , D , Queloz , D , Ségransan , D , Smalley , B , Sohy , S , Thompson , S , Triaud , A H M J , Turner , O D , Udry , S & West , R G 2018 , ' Discovery of WASP-174b : Doppler tomography of a near-grazing transit ' , Monthly Notices of the Royal Astronomical Society , vol. 480 , no. 4 , pp. 5307–5313 . https://doi.org/10.1093/mnras/sty2197
Publication
Monthly Notices of the Royal Astronomical Society
Status
Peer reviewed
ISSN
0035-8711Type
Journal article
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