The Transit Light Curve Project. VI. Three Transits of the Exoplanet TrES-2

Details The Transit Light Curve Project. VI. Three Transits of the Exoplanet TrES-2 The Transit Light Curve Project. VI. Three Transits of the Exoplanet TrES-2

2007-04-23

arxiv.org/abs/0704.2907v1

Astrophys.J.664:1185-1189,2007

Astronomy and Astrophysics

Astrophysics

15 pages, including 2 figures, accepted ApJ

Scientific paper

10.1086/519077

Of the nearby transiting exoplanets that are amenable to detailed study, TrES-2 is both the most massive and has the largest impact parameter. We present z-band photometry of three transits of TrES-2. We improve upon the estimates of the planetary, stellar, and orbital parameters, in conjunction with the spectroscopic analysis of the host star by Sozzetti and co-workers. We find the planetary radius to be 1.222 +/- 0.038 R_Jup and the stellar radius to be 1.003 +/- 0.027 R_Sun. The quoted uncertainties include the systematic error due to the uncertainty in the stellar mass (0.980 +/- 0.062 M_Sun). The timings of the transits have an accuracy of 25s and are consistent with a uniform period, thus providing a baseline for future observations with the NASA Kepler satellite, whose field of view will include TrES-2.

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