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Photometric observation of the transiting exoplanet WASP-1b

2007; Cambridge University Press; Volume: 3; Issue: S249 Linguagem: Inglês

10.1017/s1743921308016438

1743-9221

Xiaobin Wang, A. Collier Cameron, Shenghong Gu, Liyun Zhang,

Gamma-ray bursts and supernovae

Abstract 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: R p =1.44R J , M p =0.88M J , R * =1.52R ⊙ , a =0.0396AU. The new parameters of the planet imply its low density, which agrees to the previous results.