Dione and Rhea seasonal exospheres revealed by Cassini CAPS and INMS

•Dione O2 and CO2 exosphere of similar density and composition to Rhea found by INMS.•Seasonal and spatial variability suggests winter polar condensation and sublimation.•Gas time evolution suggests polar frost diffusion into the surface regolith.•Seasons (equinox exospheric peak) inverse of Saturn...

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Veröffentlicht in:	Icarus (New York, N.Y. 1962) N.Y. 1962), 2016-07, Vol.272, p.277-289
Hauptverfasser:	Teolis, B.D., Waite, J.H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Atmospheres Atmospheres Saturn Cassini mission Dynamics atmospheres Electron impact Evolution Evolution atmospheres Exposure Flyby missions Frost Radiolysis Satellites Sputtering Structure satellites
Online-Zugang:	Volltext
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