A Spitzer IRS Secondary Eclipse of HD 209458b

Details A Spitzer IRS Secondary Eclipse of HD 209458b A Spitzer IRS Secondary Eclipse of HD 209458b

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.5208c&link_type=abstract

American Astronomical Society, DPS meeting #42, #52.08; Bulletin of the American Astronomical Society, Vol. 42, p.1071

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Scientific paper

Analyses of space-based telescope secondary eclipse observations have identified several molecules in extrasolar planet atmospheres. HD 209458b, the first transiting exoplanet discovered, has been studied extensively and is found to have a clear inversion layer in the upper atmosphere (Knutson et al., 2008, ApJ 673, 526-531).
As part of the Spitzer Exoplanet Target of Opportunity program, we observed HD 209458 at 16 microns using the IRS blue peak-up array. Here, we present this system's first secondary eclipse photometric light curve at this wavelength.
Combined with other Spitzer eclipse measurements from the literature, we further characterize HD 209458b's atmosphere and discuss the presence of its inversion layer, and the chemical composition.
Spitzer is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA, which provided support for this work.

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