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WASP-3b : a strongly irradiated transiting gas-giant planet
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(2008) WASP-3b : a strongly irradiated transiting gas-giant planet. Monthly Notices of the Royal Astronomical Society, Vol.385 (No.3). pp. 1576-1584. doi:10.1111/j.1365-2966.2008.12939.x Full text not available from this repository, contact author.
Official URL: http://dx.doi.org/10.1111/j.1365-2966.2008.12939.x
Abstract
We report the discovery of WASP-3b, the third transiting exoplanet to be discovered by the WASP and SOPHIE collaboration. WASP-3b transits its host star USNO-B1.0 1256-0285133 every 1.846 834 +/- 0.000 002 d. Our high-precision radial velocity measurements present a variation with amplitude characteristic of a planetary-mass companion and in phase with the light curve. Adaptive optics imaging shows no evidence for nearby stellar companions, and line-bisector analysis excludes faint, unresolved binarity and stellar activity as the cause of the radial velocity variations. We make a preliminary spectroscopic analysis of the host star and find it to have T-eff = 6400 +/- 100 K and log g = 4.25 +/- 0.05 which suggests it is most likely an unevolved main-sequence star of spectral type F7-8V. Our simultaneous modelling of the transit photometry and reflex motion of the host leads us to derive a mass of 1.76(-0.14)(+0.08) M-J and radius 1.31(-0.14)(+0.07) R-J for WASP-3b. The proximity and relative temperature of the host star suggests that WASP-3b is one of the hottest exoplanets known, and thus has the potential to place stringent constraints on exoplanet atmospheric models.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||
| Divisions: | Faculty of Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Extrasolar planets, Astronomical photometry | ||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||
| Publisher: | Wiley | ||||
| ISSN: | 0035-8711 | ||||
| Official Date: | 11 April 2008 | ||||
| Dates: |
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| Volume: | Vol.385 | ||||
| Number: | No.3 | ||||
| Number of Pages: | 9 | ||||
| Page Range: | pp. 1576-1584 | ||||
| DOI: | 10.1111/j.1365-2966.2008.12939.x | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
Data sourced from Thomson Reuters' Web of Knowledge
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