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
Rights
© 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This work has been made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at https://doi.org/10.1093/mnras/sty2197
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