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Characterizing the Atmospheres of Hot Jupiters: From Spectra to Multi-Color Maps

Published online by Cambridge University Press:  01 May 2008

Heather A. Knutson*
Affiliation:
Harvard-Smithsonian CfA, 60 Garden St MS 10, Cambridge MA 02138USA
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Abstract

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We present new observations of the emission spectrum of the hot Jupiter TrES-4 designed to test the theory that the presence of temperature inversions in the atmospheres of these planets are correlated with the amount of radiation received by the planet. Our observations reveal that TrES-4 has an emission spectrum similar to that of HD 209458b, which requires the presence of an inversion layer high in the atmosphere and water emission bands in order to explain the observed features, providing additional support for that theory. We also present new observations of the thermal phase curve of HD 189733b at 24 μm, which we combine with our previous observations at 8 μm to examine how circulation in this planet's atmosphere varies as a function of depth. We discuss the relationship between the strength of the day-night circulation on both planets and their other observable properties, in particular their emission spectra.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2009

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