Radiative Hydrodynamical Studies of Irradiated Atmospheres

Details Radiative Hydrodynamical Studies of Irradiated Atmospheres Radiative Hydrodynamical Studies of Irradiated Atmospheres

2008-07-28

arxiv.org/abs/0807.4541v1

Astronomy and Astrophysics

Astrophysics

To appear in the Proceedings of IAU Symposium 253, "Transiting Planets", May 2008, Cambridge, MA

Scientific paper

10.1017/S1743921308026495

Transiting planets provide a unique opportunity to study the atmospheres of extra-solar planets. Radiative hydrodynamical models of the atmosphere provide a crucial link between the physical characteristics of the atmosphere and the observed properties. Here I present results from 3D simulations which solve the full Navier-Stokes equations coupled to a flux-limited diffusion treatment of radiation transfer for planets with 1, 3, and 7 day periods. Variations in opacity amongst models leads to a variation in the temperature differential across the planet, while atmospheric dynamics becomes much more variable at longer orbital periods. I also present 3D radiative simulations illustrating the importance of distinguishing between optical and infrared opacities.

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