Transmission Spectra Of 3d Hot Jupiter Model Atmospheres

Details Transmission Spectra Of 3d Hot Jupiter Model Atmospheres Transmission Spectra Of 3d Hot Jupiter Model Atmospheres

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21443408s&link_type=abstract

American Astronomical Society, AAS Meeting #214, #434.08; Bulletin of the American Astronomical Society, Vol. 41, p.705

Astronomy and Astrophysics

Astronomy

Scientific paper

We examine transmission spectra of 3D dynamical models of hot Jupiter atmospheres, with particular application to HD 209458b and HD 189733b. The complex model temperature structures lead to different chemical mixing ratios on the day and night hemispheres, and even at different locations on the limb of the planet. As a consequence, the transmission spectra are complex and show absorption due to atoms and molecules from both hot and cool regions. We show that in order to interpret observed transmission spectra, these chemical gradients must be accounted for. With the aid of a large opacity grid, the slant optical depth through the atmosphere is calculated as a function of wavelength for various stellar light impact parameters around the terminator of the planet, eventually yielding a mean wavelength-dependent planet radius. This 3D transmission spectrum model will enable more accurate characterization of the chemistry and opacity profiles of transiting planets.

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