stars: individual: (WASP-166); Astrophysics - Earth and Planetary Astrophysics
Abstract :
[en] We report the discovery of WASP-166b, a super-Neptune planet with a mass of 0.1 M[SUB]Jup[/SUB] (1.9 M[SUB]Nep[/SUB]) and a bloated radius of 0.63 R[SUB]Jup[/SUB]. 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'.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Hellier, Coel; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Anderson, D. R.; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Triaud, A. H. M. J.; Observatoire astronomique de l'Université de Genève 51 ch. des Maillettes, CH-1290 Sauverny, Switzerland ; School of Physics & Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
Bouchy, F.; Observatoire astronomique de l'Université de Genève 51 ch. des Maillettes, CH-1290 Sauverny, Switzerland
Burdanov, Artem ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic
Collier Cameron, A.; SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, Fife KY16 9SS, UK
Delrez, Laetitia ; Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Allée du 6 Août, 17, Bat. B5C, B-4000 Liège, Belgium ; Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 0HE, UK
Ehrenreich, D.; Observatoire astronomique de l'Université de Genève 51 ch. des Maillettes, CH-1290 Sauverny, Switzerland
Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic
Jehin, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Lendl, M.; Observatoire astronomique de l'Université de Genève 51 ch. des Maillettes, CH-1290 Sauverny, Switzerland ; Space Research Institute, Austrian Academy of Sciences, Schmiedlstr 6, A-8042 Graz, Austria
Linder, E.; Physikalisches Institut, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland
Nielsen, L. D.; Observatoire astronomique de l'Université de Genève 51 ch. des Maillettes, CH-1290 Sauverny, Switzerland
Maxted, P. F. L.; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK
Pepe, F.; Observatoire astronomique de l'Université de Genève 51 ch. des Maillettes, CH-1290 Sauverny, Switzerland
Pollacco, D.; Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
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