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We develop atmosphere models of two of the three Kepler-field planets thatwere known prior to the start of the Kepler mission (HAT-P-7b and TrES-2). Wefind that published Kepler and Spitzer data for HAT-P-7b appear to require anextremely hot upper atmosphere on the dayside, with a strong thermal inversionand little day-night redistribution. The Spitzer data for TrES-2 suggest a mildthermal inversion with moderate day-night redistribution. We examine the effectof nonequilibrium chemistry on TrES-2 model atmospheres and find that methanelevels must be adjusted by extreme amounts in order to cause even mild changesin atmospheric structure and emergent spectra. Our best-fit models to theSpitzer data for TrES-2 lead us to predict a low secondary eclipse planet-starflux ratio (~2 x 10^-5) in the Kepler bandpass, which is consistent with whatvery recent observations have found. Finally, we consider how the Kepler-bandoptical flux from a hot exoplanet depends on the strength of a possible extraoptical absorber in the upper atmosphere. We find that the optical flux is notmonotonic in optical opacity, and the non-monotonicity is greater for brighter,hotter stars.

Atmosphere and Spectral Models of the Kepler-Field Planets HAT-P-7b and TrES-2