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WASP-80b : a gas giant transiting a cool dwarf
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(2013) WASP-80b : a gas giant transiting a cool dwarf. Astronomy & Astrophysics, Volume 551 . Article number A80. doi:10.1051/0004-6361/201220900 ISSN 0004-6361.
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Official URL: http://dx.doi.org/10.1051/0004-6361/201220900
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.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Astronomy & Astrophysics | ||||
Publisher: | EDP Sciences | ||||
ISSN: | 0004-6361 | ||||
Official Date: | March 2013 | ||||
Dates: |
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Volume: | Volume 551 | ||||
Page Range: | Article number A80 | ||||
DOI: | 10.1051/0004-6361/201220900 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Swiss National Science Foundation , Belgian Fund for Scientific Research (Fond National de la Recherche Scientifique, F.R. SFNRS) , Swiss National Science Foundation (SNF), National Aeronautics and Space Administration, National Science Foundation | ||||
Grant number: | FRFC 2.5.594.09.F (F.R. SFNRS) |
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