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Updated parameters for the transiting exoplanet WASP-3b using RISE, a new fast camera for the Liverpool Telescope

Gibson, NP and Pollacco, D and Simpson, EK and Joshi, YC and Todd, I and Benn, C and Christian, D and Hrudkova, M and Keenan, FP and Meaburn, J and Skillen, I and Steele, IA (2008) Updated parameters for the transiting exoplanet WASP-3b using RISE, a new fast camera for the Liverpool Telescope. Astronomy and Astrophysics, 492 (2). pp. 603-607. ISSN 0004-6361

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Abstract

Some of the first results are reported from RISE – a new fast camera mounted on the Liverpool Telescope primarily designed to obtain high time-resolution light curves of transiting extrasolar planets for the purpose of transit timing. A full and partial transit of WASP-3 are presented, and a Markov-Chain Monte Carlo analysis is used to update the parameters from the discovery paper. This results in a planetary radius of $1.29^{\rm +0.05}_{-0.12}$ RJ and therefore a density of $0.82^{+0.14}_{-0.09}~{\rho}_J$, consistent with previous results. The inclination is $85.06^{\rm +0.16}_{-0.15}$ deg, in agreement (but with a significant improvement in the precision) with the previously determined value. Central transit times are found to be consistent with the ephemeris given in the discovery paper; however, a new ephemeris calculated using the longer baseline results in $T_{\rm c}$(0) = 2 454 605.55915 $\pm$ 0.00023 HJD and P = 1.846835 $\pm$ 0.000002 days.

Item Type: Article
Uncontrolled Keywords: 0201 Astronomical And Space Sciences
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: EDP Sciences
Related URLs:
Date Deposited: 19 Jan 2017 09:27
Last Modified: 07 Sep 2017 13:05
DOI or Identification number: 10.1051/0004-6361:200811015
URI: http://researchonline.ljmu.ac.uk/id/eprint/5289

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