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Photometric observation of the transiting exoplanet WASP-1b

Published online by Cambridge University Press:  01 October 2007

Xiao-bin Wang ,
Andrew Collier Cameron ,
Sheng-hong Gu  and
Li-yun Zhang
Xiao-bin Wang
Affiliation:
National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China email: wangxb@ynao.ac.cn
Andrew Collier Cameron
Affiliation:
School of Physics and Astronomy, University of St Andrews, Fife KY16 9SS, UK email: acc4@st-and.ac.uk
Sheng-hong Gu
Affiliation:
National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China email: wangxb@ynao.ac.cn
Li-yun Zhang
Affiliation:
National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China email: wangxb@ynao.ac.cn
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Abstract

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The extra-solar planet WASP-1b, discovered by SuperWASP consortium in 2006, was observed through R filter using the 1-meter telescope with CCD camera at Yunnan Observatory on November 11, 2006. The systematic errors in photometric data were reduced by means of Tamuz et al. (2005) and Collier Cameron et al. (2006)'s algorithms. In order to estimate the parameters of the system, the MCMC (Markov Chain Monte Carlo) analysis is applied to fit the observed light curve. The following parameters of the system are derived: Rp=1.44RJ, Mp=0.88MJ, R*=1.52R⊙, a=0.0396AU. The new parameters of the planet imply its low density, which agrees to the previous results.

Keywords

exoplanettransitphotometry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S249: Exoplanets: Detection, Formation and Dynamics , October 2007 , pp. 85 - 87
Copyright
Copyright © International Astronomical Union 2008

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