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WASP-5b : a dense, very hot Jupiter transiting a 12th-mag Southern-hemisphere star
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(2008) WASP-5b : a dense, very hot Jupiter transiting a 12th-mag Southern-hemisphere star. Monthly Notices of the Royal Astronomical Society, Vol.387 (No.1). L4-L7. doi:10.1111/j.1745-3933.2008.00465.x ISSN 0035-8711.
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Official URL: http://dx.doi.org/10.1111/j.1745-3933.2008.00465.x
Abstract
We report the discovery of WASP-5b, a Jupiter-mass planet orbiting a 12th-mag G-type star in the Southern hemisphere. The 1.6-d orbital period places WASP-5b in the class of very hot Jupiters and leads to a predicted equilibrium temperature of 1750 K. WASP-5b is the densest of any known Jovian-mass planet, being a factor of 7 denser than TrES-4, which is subject to similar stellar insolation, and a factor of 3 denser than WASP-4b, which has a similar orbital period. We present transit photometry and radial velocity measurements of WASP-5 (= USNO-B1 0487.0799749), from which we derive the mass, radius and density of the planet: MP = 1.58(-0.08)(+0.13) M-J, R-P = 1.090(-0.058)(+0.094) R-J and rho P = 1.22(-0.24)(+0.19) rho J. The orbital period is P = 1.6284296(-0.0000037)(+0.0000048) d and the mid-transit epoch is T-C (HJD) = 245 4375.62466(-0.00025)(+0.00026).
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||
| Publisher: | Wiley | ||||
| ISSN: | 0035-8711 | ||||
| Official Date: | 11 June 2008 | ||||
| Dates: |
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| Volume: | Vol.387 | ||||
| Number: | No.1 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | L4-L7 | ||||
| DOI: | 10.1111/j.1745-3933.2008.00465.x | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | South African Astronomical Observatory (SAAO), UK's Science and Technology Facilities Council |
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