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Spectrum and atmosphere models of irradiated transiting giant planets

Published online by Cambridge University Press:  01 May 2008

Ivan Hubeny  and
Adam Burrows
Ivan Hubeny
Affiliation:
Steward Observatory and Dept. of Astronomy, University of Arizona, 933 N. Cherry Ave., Tucson, AZ 85721, USA email: hubeny@as.arizona.edu
Adam Burrows
Affiliation:
Dept. of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 0854, USA email: burrows@astro.princeton.edu
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Abstract

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We show that a consistent fit to observed secondary eclipse data for several strongly irradiated transiting planets demands a temperature inversion (stratosphere) at altitude. Such a thermal inversion significantly influences the planet/star contrast ratios at the secondary eclipse, their wavelength dependences, and, importantly, the day-night flux contrast during a planetary orbit. The presence of the thermal inversion/stratosphere seems to roughly correlate with the stellar flux at the planet. Such temperature inversions might be caused by an upper-atmosphere absorber whose exact nature is still uncertain.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S253: Transiting Planets , May 2008 , pp. 239 - 245
Copyright
Copyright © International Astronomical Union 2009

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