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Hellier, C, Anderson, DR, Cameron, AC, Delrez, L, Gillon, M, Jehin, E, Lendl, M, Maxted, PFL, Pepe, F, Pollacco, D, Queloz, D, Segransan, D, Smalley, B, Smith, AMS, Southworth, J, Triaud, AHMJ, Turner, OD, Udry, S and West, RG (2014) Three WASP-South transiting exoplanets: WASP-74b, WASP-83b & WASP-89b. arXiv.org, 150 (1). ISSN 0004-6256
Full text not available from this repository.Abstract
We report the discovery of three new transiting hot Jupiters by WASP-South together with the TRAPPIST photometer and the Euler/CORALIE spectrograph. WASP-74b orbits a star of V = 9.7, making it one of the brighter systems accessible to Southern telescopes. It is a 0.95 M_Jup planet with a moderately bloated radius of 1.5 R_Jup in a 2-d orbit around a slightly evolved F9 star. WASP-83b is a Saturn-mass planet at 0.3 M_Jup with a radius of 1.0 R_Jup. It is in a 5-d orbit around a fainter (V = 12.9) G8 star. WASP-89b is a 6 M_Jup planet in a 3-d orbit with an eccentricity of e = 0.2. It is thus similar to massive, eccentric planets such as XO-3b and HAT-P-2b, except that those planets orbit F stars whereas WASP-89 is a K star. The V = 13.1 host star is magnetically active, showing a rotation period of 20.2 d, while star spots are visible in the transits. There are indications that the planet's orbit is aligned with the stellar spin. WASP-89 is a good target for an extensive study of transits of star spots.
Item Type: | Article |
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Uncontrolled Keywords: | astrophysics; planetary systems; stars; WASP74; WASP83; WASP89 |
Subjects: | Q Science > QB Astronomy |
Divisions: | Faculty of Natural Sciences > School of Chemical and Physical Sciences |
Related URLs: | |
Depositing User: | Symplectic |
Date Deposited: | 11 Mar 2015 14:19 |
Last Modified: | 05 Mar 2020 13:43 |
URI: | https://eprints.keele.ac.uk/id/eprint/324 |