Phase-Dependent Properties of Extrasolar Planet Atmospheres

Details Phase-Dependent Properties of Extrasolar Planet Atmospheres Phase-Dependent Properties of Extrasolar Planet Atmospheres

2005-07-06

arxiv.org/abs/astro-ph/0507136v2

Astrophys.J.632:1132-1139,2005

Astronomy and Astrophysics

Astrophysics

8 pages, 7 figures, accepted for publication in the Astrophysical Journal

Scientific paper

10.1086/444349

Recently the Spitzer Space Telescope observed the transiting extrasolar planets, TrES-1 and HD209458b. These observations have provided the first estimates of the day side thermal flux from two extrasolar planets orbiting Sun-like stars. In this paper, synthetic spectra from atmospheric models are compared to these observations. The day-night temperature difference is explored and phase-dependent flux densities are predicted for both planets. For HD209458b and TrES-1, models with significant day-to-night energy redistribution are required to reproduce the observations. However, the observational error bars are large and a range of models remains viable.

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