Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dps....40.3704b&link_type=abstract
American Astronomical Society, DPS meeting #40, #37.04; Bulletin of the American Astronomical Society, Vol. 40, p.463
Astronomy and Astrophysics
Astronomy
Scientific paper
Approximately 300 exoplanets, mostly giant planets (EGPs) in the Jovian mass range, have been detected orbiting stars in the solar neighborhood. More than 15% of them are transiting their primaries and these have collectively yielded a wealth of structural and physical information which theorists are scrambling to interpret. In this talk. I will present the current theory of the their atmospheres, compositions, and spectra. Due to stellar irradiation effects and heat redistribution by super-rotational jet streams, we must eventually construct with some fidelity 3D general circulation models (GCMs), with multi-D radiative transfer.
However, simpler planar models with average irradiation boundary conditions and crude day-night heat transport algorithms do a reasonable 1st-order job of reproducing what is observed directly by the Spitzer infrared space telescope. In particular, thermal inversions and stratospheres are inferred for many close-in EGPs.
I will discuss the confrontation of theory with data and summarize what has been learned to date.
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