Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufm.p23b1367l&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #P23B-1367
Physics
6008 Composition (1060), 6040 Origin And Evolution, 6063 Volcanism (5480, 8450), 6280 Saturnian Satellites
Scientific paper
Despite obvious physical differences in size, shape, and surface albedo between Enceladus and cometary nuclei, the compositional similarities between the vented gases from Enceladus and the gases in cometary comae are striking. The approximately 1028 molecules/s of material emitted from Enceladus, composed mostly of water with some hypervolatile species, flows out in jets similar to those seen for moderately active comets. Using recent data from Cassini instruments, including the Ion and Neutral Mass Spectrometer (INMS), the Visual and Infrared Mapping Spectrometer (VIMS) and the Imaging Science Subsystem (ISS), we investigate the compositional similarities between Enceladus' plumes and cometary comae and we compare the physical properties (densities, speeds, collimation) of the plumes and cometary jets. We will discuss the implications our findings have for various aspects of the origin and evolution of Enceladus.
Hibbitts Ch. A.
Lisse Carey Michael
Perry Mark E.
Turtle Elizabeth Pope
Weaver Harold A.
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