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.
|Original language||English (US)|
|Number of pages||7|
|Journal||Proceedings of the International Astronomical Union|
|State||Published - May 1 2008|
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science