. (2009) The 0.5MJ transiting exoplanet WASP-13b. Astronomy & Astrophysics, Vol.50 (No.1). pp. 391-394. ISSN 0004-6361

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Abstract

We report the discovery of WASP-13b, a low-mass $ M_{\rm p} = 0.46 ^_~M_J$ transiting exoplanet with an orbital period of 4.35298 $\pm$ 0.00004 days. The transit has a depth of 9 mmag, and although our follow-up photometry does not allow us to constrain the impact parameter well (0 < b < 0.46), with radius in the range $R_{\rm p}$ ~ 1.06-1.21 RJ the location of WASP-13b in the mass-radius plane is nevertheless consistent with H/He-dominated, irradiated, low core mass and core-free theoretical models. The G1V host star is similar to the Sun in mass $(M__ ~M_{\odot})$ and metallicity ([M/H] = 0.0$\pm$0.2), but is possibly older ( $8.5^_{\rm -4.9}$ Gyr).

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Wide Angle Search for Planets project, Extrasolar planets -- Research, Planetary theory, Astronomical photometry -- Great Britain, Double stars -- Motion in line of sight
Journal or Publication Title:	Astronomy & Astrophysics
Publisher:	EDP Sciences
ISSN:	0004-6361
Date:	July 2009
Volume:	Vol.50
Number:	No.1
Page Range:	pp. 391-394
Identification Number:	10.1051/0004-6361/200912018
Status:	Peer Reviewed
Access rights to Published version:	Open Access
Funder:	Science and Technology Facilities Council (Great Britain) (STFC)
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URI:	http://wrap.warwick.ac.uk/id/eprint/2296

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