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WASP-39b: A highly inflated Saturn-mass planet orbiting a late G-type star

Faedi, F; Barros, Susana C.C.; Anderson, David R.; Brown, David J.A.; Collier Cameron, Andrew; Pollacco, D; Boisse, Isabelle; Hebrard, Guillaume; Lendl, Monika A.; Lister, Tim A.; Bento (Da Silva Bento), Joao; Haswell, C

Description

We present the discovery of WASP-39b, a highly inflated transiting Saturn-mass planet orbiting a late G-type dwarf star with a period of 4.055259 ± 0.000008 d, Transit Epoch T0 = 2 455 342.9688 ± 0.0002(HJD), of duration 0.1168 ± 0.0008d. A combined analysis of the WASP photometry, high-precision follow-up transit photometry, and radial velocities yield a planetary mass of Mpl = 0.28 ± 0.03 M J and a radius of Rpl = 1.27 ± 0.04 RJ, resulting in a mean density of 0.14 ± 0.02 ρJ. The stellar...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
URI: http://hdl.handle.net/1885/152059
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361/201116671
Access Rights: Open Access

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