Influence of photoelectrons on the structure and dynamics of the upper atmosphere of a hot Jupiter

A self-consistent, aeronomic model of the upper atmosphere of a “hot Jupiter” including reactions involving suprathermal photoelectrons is presented. This model is used to compute the height profiles of the gas density, velocity, and temperature in the atmosphere of the exoplanet HD 209458b. It is s...

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Bibliographic Details
Published in:Astronomy reports 2017-05, Vol.61 (5), p.387-392
Main Authors: Ionov, D. E., Shematovich, V. I., Pavlyuchenkov, Ya. N.
Format: Article
Language:English
Subjects:
Astronomy
Atmosphere
Cooling rate
Extrasolar planets
Gas density
Heating and cooling
Jupiter
Observations and Techniques
Photoelectrons
Physics
Physics and Astronomy
Planetary atmospheres
Upper atmosphere
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Summary:A self-consistent, aeronomic model of the upper atmosphere of a “hot Jupiter” including reactions involving suprathermal photoelectrons is presented. This model is used to compute the height profiles of the gas density, velocity, and temperature in the atmosphere of the exoplanet HD 209458b. It is shown that including suprathermal electrons when computing the heating and cooling functions reduces the mass loss rate of the atmosphere by a factor of five.
ISSN:1063-7729
1562-6881
DOI:10.1134/S1063772917050018