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New observations of the extended hydrogen exosphere of the extrasolar planet HD209458b
David Ehrenreich, Alain Lecavelier des Etangs, Guillaume Hébrard +5
Atomic hydrogen escaping from the planet HD209458b provides the largest observational signature ever detected for an extrasolar planet atmosphere. However, the Space Telescope Imag…
On the Insignificance of Photochemical Hydrocarbon Aerosols in the Atmospheres of Close-in Extrasolar Giant Planets
Mao-Chang Liang, Sara Seager, Christopher D. Parkinson +3
The close-in extrasolar giant planets (CEGPs) reside in irradiated environments much more intense than that of the giant planets in our solar system. The high UV irradiance strongl…
Source of Atomic Hydrogen in the Atmosphere of HD 209458b
Mao-Chang Liang, Christopher D. Parkinson, Anthony Y. -T. Lee +1
Atomic hydrogen loss at the top of HD 209458b's atmosphere has been recently detected Vidal-Madjar et al. 2003. We have developed a 1-dimensional model to study the chemistry in th…