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The first planet detected in the WTS: an inflated hot Jupiter in a 3.35 d orbit around a late F star

Cappetta, M.; Saglia, R. P.; Birkby, J. L.; Koppenhoefer, J.; Pinfield, D. J.; Hodgkin, S. T.; Cruz, P.; Kovács, G.; Sipőcz, B.; Barrado, D; Nefs, B; Pavlenko, Y. V.; Fossati, L.; del Burgo, C.; Martin, E. L.; Snellen, I.; Barnes, J.; Bayo, A.; Campbell, D. A.; Catalan, S.; Galvez-Ortiz, M. C.; Goulding, N.; Haswell, C.; Ivanyuk, O.; Jones, H. R.; Kuznetsov, M.; Lodieu, N.; Marocco, F.; Mislis, D.; Murgas, F.; Napiwotzki, R.; Palle, E.; Pollacco, D.; Sarro Baro, L.; Solano, E.; Steele, P.; Stoev, H.; Tata, R. and Zendejas, J. (2012). The first planet detected in the WTS: an inflated hot Jupiter in a 3.35 d orbit around a late F star. Monthly Notices of the Royal Astronomical Society, 427(3) pp. 1877–1890.

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URL: http://mnras.oxfordjournals.org/content/427/3/1877
DOI (Digital Object Identifier) Link: https://doi.org/10.1111/j.1365-2966.2012.21937.x
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Abstract

We report the discovery of WTS-1b, the first extrasolar planet found by the WFCAM Transit Survey, which began observations at the 3.8-m United Kingdom Infrared Telescope (UKIRT) in 2007 August. Light curves comprising almost 1200 epochs with a photometric precision of better than 1 per cent to J ˜ 16 were constructed for ˜60 000 stars and searched for periodic transit signals. For one of the most promising transiting candidates, high-resolution spectra taken at the Hobby-Eberly Telescope (HET) allowed us to estimate the spectroscopic parameters of the host star, a late-F main-sequence dwarf (V = 16.13) with possibly slightly subsolar metallicity, and to measure its radial velocity variations. The combined analysis of the light curves and spectroscopic data resulted in an orbital period of the substellar companion of 3.35 d, a planetary mass of 4.01 ± 0.35 MJ and a planetary radius of 1.49-0.18+0.16 RJ. WTS-1b has one of the largest radius anomalies among the known hot Jupiters in the mass range 3-5 MJ. The high irradiation from the host star ranks the planet in the pM class.

Item Type: Journal Item
Copyright Holders: 2012 The Authors
ISSN: 1365-2966
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetEuropean Commission
Not SetNot SetSTFC (Science & Technology Facilities Council)
Not SetNot SetMICINN
Not SetNot SetFundação para a Ciência e a Tecnologia (FCT)-Portugal
Keywords: photometric techniques; radial velocities; detection of planets and satellites; planets and satellites; planetary systems
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Related URLs:
Item ID: 36565
Depositing User: Carole Haswell
Date Deposited: 08 Feb 2013 10:02
Last Modified: 10 Dec 2018 15:28
URI: http://oro.open.ac.uk/id/eprint/36565
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