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Title: WASP-80b: a gas giant transiting a cool dwarf
Authors: Triaud, A. H. M. J.
Anderson, D. R.
Cameron, A. C.
Doyle, A. P.
Fumel, A.
Gillon, M.
Hellier, C.
Jehin, E.
Lendl, M.
Lovis, C.
Maxted, P. F. L.
Pepe, F.
Pollacco, D.
Queloz, D.
Segransan, D.
Smalley, B.
Smith, A. M. S.
Udry, S.
West, Richard Granville
Wheatley, P. J.
First Published: 26-Feb-2013
Publisher: EDP Sciences for European Southern Observatory (ESO)
Citation: Astronomy & Astrophysics, 2013, 551, A80
Abstract: We report the discovery of a planet transiting the star WASP-80 (1SWASP J201240.26-020838.2; 2MASS J20124017-0208391; TYC 5165-481-1; BPM 80815; V = 11.9, K = 8.4). Our analysis shows this is a 0.55 ± 0.04 Mjup, 0.95 ± 0.03 Rjup gas giant on a circular 3.07 day orbit around a star with a spectral type between K7V and M0V. This system produces one of the largest transit depths so far reported, making it a worthwhile target for transmission spectroscopy. We find a large discrepancy between the vsini⋆  inferred from stellar line broadening and the observed amplitude of the Rossiter-McLaughlin effect. This can be understood either by an orbital plane nearly perpendicular to the stellar spin or by an additional, unaccounted for source of broadening.
DOI Link: 10.1051/0004-6361/201220900
ISSN: 0004-6361
eISSN: 1432-0746
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © ESO, 2013. Reproduced with permission from Astronomy & Astrophysics, © ESO.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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