. (2008) WASP-4b : a 12th magnitude transiting hot Jupiter in the southern hemisphere. Astrophysical Journal Letters, Vol.675 (No.2). L113-L116. ISSN 2041-8205

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Abstract

We report the discovery of WASP-4b, a large transiting gas-giant planet with an orbital period of 1.34 days. This is the first planet to be discovered by the SuperWASP-South observatory and CORALIE collaboration and the first planet orbiting a star brighter than 16th magnitude to be discovered in the southern hemisphere. A simultaneous fit to high-quality light curves and precision radial velocity measurements leads to a planetary mass of 1.22(-0.08)(+0.09) M-Jup and a planetary radius of 1.42(-0.04)(+0.07) R-Jup. The host star is USNO-B1.0 0479-0948995, a G7 V star of visual magnitude 12.5. As a result of the short orbital period, the predicted surface temperature of the planet is 1761 K, making it an ideal candidate for detections of the secondary eclipse at infrared wavelengths.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Astrophysical Journal Letters
Publisher:	IOP Publishing Ltd
ISSN:	2041-8205
Official Date:	10 March 2008
Dates:	Date Event 10 March 2008 Published
Volume:	Vol.675
Number:	No.2
Number of Pages:	4
Page Range:	L113-L116
Identification Number:	10.1086/586735
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
URI:	http://wrap.warwick.ac.uk/id/eprint/30136

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