Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p31b1533h&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #P31B-1533
Physics
[6280] Planetary Sciences: Solar System Objects / Saturnian Satellites
Scientific paper
Mimas is a little moon (198 km in radius), but is proving to be a fascinating body. Bizarre leading-trailing dichotomies abound, including a unique thermal signature that may, or may not, be related to Herschel crater (139 km in diameter), which dominates the leading hemisphere. Recent visible-wavelength color maps (Schenk et al., 2010) show an intriguing lens-shaped feature covering the leading hemisphere, perhaps the result of high-energy electron bombardment. Mimas’s visible-to-near-infrared spectrum suggests a surface that is dominated by water ice. We explore the ultraviolet spectral signature of Mimas and relate it to the longer wavelength data, to place constraints on non-ice surface species. The ultraviolet regime is particularly sensitive to exogenic processes. We look for spatial variations in ultraviolet albedo that could reveal the effects of charged particle interaction, E-ring grain interaction, and/or neutral transport.
Cassidy Timothy A.
Hansen Camilla Juul
Hendrix Amanda R.
Holsclaw Gregory M.
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