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arXiv · 0810.3526

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

N. P. Gibson·D. Pollacco·E. K. Simpson·Y. C. Joshi·I. Todd·C. Benn·D. Christian·M. Hrudková·F. P. Keenan·J. Meaburn·I. Skillen·I. A. Steele
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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 Monte Carlo Markov Chain analysis is used to update the parameters from the discovery paper. This results in a planetary radius of 1.29^{+0.05}_{-0.12} R_J and therefore a density of 0.82^{+0.14}_{-0.09} p_J, consistent with previous results. The inclination is 85.07^{+0.15}_{-0.16} 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_c(0) = 2454605.55915 +- 0.00023 HJD and P = 1.846835 +- 0.000002 days.

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N. P. Gibson, D. Pollacco, E. K. Simpson, Y. C. Joshi, I. Todd, C. Benn, D. Christian, M. Hrudková, F. P. Keenan, J. Meaburn, I. Skillen, I. A. Steele. 2008-10-20. Updated parameters for the transiting exoplanet WASP-3b using RISE, a new fast camera for the Liverpool Telescope. https://doi.org/10.1051/0004-6361%3A200811015

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