WASP-166b : a bloated super-Neptune transiting a V = 9 star
Abstract
We report the discovery of WASP-166b, a super-Neptune planet with a mass of 0.1 MJup (1.9 MNep) and a bloated radius of 0.63 RJup. It transits a V = 9.36, F9V star in a 5.44-d orbit that is aligned with the stellar rotation axis (sky-projected obliquity angle λ = 3 ± 5 degrees). Variations in the radial-velocity measurements are likely the result of magnetic activity over a 12-d stellar rotation period. WASP-166b appears to be a rare object within the “Neptune desert”.
Citation
Hellier , C , Triaud , A H M J , Bouchy , F , Burdanov , A , Cameron , A C , Delrez , L , Ehrenreich , D , Gillon , M , Jehin , E , Lendl , M , Linder , E , Nielsen , L D , Maxted , P F L , Pepe , F , Pollacco , D , Queloz , D , Ségransan , D , Smalley , B , Spake , J J , Temple , L Y , Udry , S , West , R G & Wyttenbach , A 2019 , ' WASP-166b : a bloated super-Neptune transiting a V = 9 star ' , Monthly Notices of the Royal Astronomical Society , vol. 488 , no. 3 , pp. 3067-3075 . https://doi.org/10.1093/mnras/stz1903
Publication
Monthly Notices of the Royal Astronomical Society
Status
Peer reviewed
ISSN
0035-8711Type
Journal article
Description
ACC acknowledges support from STFC consolidated grant number ST/R000824/1.Collections
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