Title:

Atmospheres and Spectra of Extrasolar Giant Planets




Ivan Hubeny 
NOAO, Tucson




Abstract:

New calculations of model atmospheres and emergent spectra
of extrasolar giant planets (EGP) and brown dwarfs are
presented.  The models treat self-consistently radiative
transfer in an atmosphere in radiative/convective
equilibrium, and in the presence of complex non-equilibrium
chemistry. An emphasis is given on discussing the effects
of stellar irradiation on cloud formation, atmospheric
chemistry, and the predicted spectrum.  These models allow
us to draw conclusions about a spectroscopic detectability
of EGPs.  Finally, I show that under certain circumstances
the strong irradiation may even lead to multiple solutions
for the atmospheric structure in the upper layers.