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The Transit Light Curve Project. IV. Five Transits of the Exoplanet OGLE-TR-10b

Matthew J. Holman, Joshua N. Winn, Cesar I. Fuentes, Joel D. Hartman, K. Z. Stanek, Guillermo Torres, Dimitar D. Sasselov, B. Scott Gaudi, R. Lynne Jones, Wesley Fraser

astro-pharXiv:astro-ph/0506569

Abstract

We present I and B photometry of five distinct transits of the exoplanet OGLE-TR-10b. By modeling the light curves, we find the planetary radius to be RP = 1.06 +/- 0.08 RJup and the stellar radius to be RS = 1.10 +/- 0.07 Rsun. The uncertainties are dominated by statistical errors in the photometry. Our estimate of the planetary radius is smaller than previous estimates that were based on lower-precision photometry, and hence the planet is not as anomalously large as was previously thought. We provide updated determinations of all the system parameters, including the transit ephemerides.

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