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

N.P. Gibson, Don Pollacco, E.K. Simpson, Yogesh Joshi, Ian Todd, C. Benn, Damian Christian, M. Hrudkova, Francis 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 Markov-Chain Monte Carlo analysis is used to update the parameters from the discovery paper. This results in a planetary radius of 1.29(-0.12)(+0.05) R-J and therefore a density of 0.82(-0.09)(+0.14) rho(J), consistent with previous results. The inclination is 85.06(-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) = 2 454 605.55915 +/- 0.00023 HJD and P = 1.846835 +/- 0.000002 days.
Original languageEnglish
Pages (from-to)603-607
Number of pages5
JournalAstronomy and Astrophysics
Volume492
Issue number2
DOIs
Publication statusPublished - 01 Dec 2008

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

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    Gibson, N. P., Pollacco, D., Simpson, E. K., Joshi, Y., Todd, I., Benn, C., Christian, D., Hrudkova, M., Keenan, F., Meaburn, J., Skillen, I., & Steele, I. A. (2008). Updated parameters for the transiting exoplanet WASP-3b using RISE, a new fast camera for the Liverpool Telescope. Astronomy and Astrophysics, 492(2), 603-607. https://doi.org/10.1051/0004-6361:200811015