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Oxford University Press, Monthly Notices of the Royal Astronomical Society, 3(488), p. 3067-3075, 2019

DOI: 10.1093/mnras/stz1903

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WASP-166b: a bloated super-Neptune transiting a V = 9 star

Journal article published in 2019 by Coel Hellier, D. R. Anderson ORCID, A. H. M. J. Triaud, F. Bouchy, A. Burdanov, A. Collier Cameron ORCID, L. Delrez ORCID, D. Ehrenreich, M. Gillon, E. Jehin, M. Lendl ORCID, E. Linder, L. D. Nielsen, P. F. L. Maxted, F. Pepe and other authors.
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

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 deg). 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’.