Time-Dependent Gas Kinetics in Tenuous Planetary Atmospheres: The Cometary Coma

Icarus ◽  
1996 ◽  
Vol 123 (1) ◽  
pp. 207-226 ◽  
Author(s):  
Michael R. Combi
Keyword(s):  
Planetary Atmospheres ◽  
Time Dependent ◽  
Gas Kinetics ◽  
Cometary Coma

scholarly journals The Influences of Stellar Activity on Planetary Atmospheres

2016 ◽  
Vol 12 (S328) ◽  
pp. 168-179
Author(s):  
Colin P. Johnstone
Keyword(s):  
Mass Loss ◽  
Planetary Atmospheres ◽  
Time Dependent ◽  
Stellar Winds ◽  
Additional Mass ◽  
Stellar Activity ◽  
X Ray

AbstractOn evolutionary timescales, the atmospheres of planets evolve due to interactions with the planet's surface and with the planet's host star. Stellar X-ray and EUV (=’XUV’) radiation is absorbed high in the atmosphere, driving photochemistry, heating the gas, and causing atmospheric expansion and mass loss. Atmospheres can interact strongly with the stellar winds, leading to additional mass loss. In this review, I summarise some of the ways in which stellar output can influence the atmospheres of planets. I will discuss the importance of simultaneously understanding the evolution of the star's output and the time dependent properties of the planet's atmosphere.

Sign in / Sign up

Export Citation Format

Share Document