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Session 70 - Planetary Systems Near & Far.
Display session, Friday, January 09
Exhibit Hall,
We have calculated synthetic infrared (2-5 micron) spectra for the planets orbiting 51 Pegasus and Upsilon Andromeda. Our calculations assume these are gas-giant planets, wherein planetary methane absorbs stellar near-infrared flux, forming a hot planetary stratosphere. The planetary spectrum consists of emission in methane and carbon monoxide lines, which may be detectable superposed on the spectrum of the parent star. We describe the results of preliminary observations designed to detect these very weak features in the stellar spectra.
