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WASP-42 b and WASP-49 b : two new transiting sub-Jupiters
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Lendl, M., Anderson, D. R., Collier-Cameron, A., Doyle, A. P., Gillon, M., Hellier, C., Jehin, E., Lister, T. A., Maxted, P. F. L., Pepe, F., Pollacco, Don, Queloz, D., Smalley, B., Ségransan, D., Smith, A. M. S., Triaud, A. H. M. J., Udry, S., West, Richard G. and Wheatley, P. J. (2012) WASP-42 b and WASP-49 b : two new transiting sub-Jupiters. Astronomy & Astrophysics, Volume 544 . A72. doi:10.1051/0004-6361/201219585 ISSN 0004-6361.
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Official URL: http://dx.doi.org/10.1051/0004-6361/201219585
Abstract
We report the discovery of two new transiting planets from the WASP survey. WASP-42 b is a 0.500 ± 0.035 MJ planet orbiting a K1 star at a separation of 0.0548 ± 0.0017 AU with a period of 4.9816872 ± 7.3 × 10-6 days. The radius of WASP-42 b is 1.080 ± 0.057 RJ while its equilibrium temperature is Teq = 995 ± 34 K. We detect some evidence for a small but non-zero eccentricity of e = 0.060 ± 0.013. WASP-49 b is a 0.378 ± 0.027 MJ planet around an old G6 star. It has a period of 2.7817387 ± 5.6 × 10-6 days and a separation of 0.0379 ± 0.0011 AU. This planet is slightly bloated, having a radius of 1.115 ± 0.047 RJ and an equilibrium temperature of Teq = 1369 ± 39 K. Both planets have been followed up photometrically, and in total we have obtained 5 full and one partial transit light curves of WASP-42 and 4 full and one partial light curves of WASP-49 using the Euler-Swiss, TRAPPIST and Faulkes South telescopes.
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: | August 2012 | ||||
Dates: |
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Volume: | Volume 544 | ||||
Number of Pages: | 10 | ||||
Page Range: | A72 | ||||
DOI: | 10.1051/0004-6361/201219585 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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