Atmospheres and Plasma Interactions at Saturn’s Largest Inner Icy Satellites
Atmospheres and Plasma Interactions at Saturn’s Largest Inner Icy Satellites
复制标题
土星最大的内部冰卫星的大气和等离子体相互作用
DOI:
10.1086/428665
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发表时间:
2005
期刊:
影响因子:
--
通讯作者:
D. Strobel
中科院分区:
文献类型:
--
作者:
J. Saur;D. Strobel
We explore the possible existence of atmospheres on Saturn's icy satellites, Mimas, Enceladus, Tethys, Dione, and Rhea. Only the most massive satellite, Rhea, has the potential to hold a thin oxygen atmosphere/exosphere. The masses of the other satellites are too small to retain gravitationally atmospheres in the presence of large thermal escape rates. If the temperature of Rhea's atmosphere is close to its surface temperature, then a molecular oxygen column density of 6 × 1017 m-2 is possible and causes a discernable plasma interaction with Saturn's magnetosphere that can be probed by close flybys of the Cassini spacecraft.