Ice and minerals on Callisto - A reassessment of the reflectance spectra

Details Ice and minerals on Callisto - A reassessment of the reflectance spectra Ice and minerals on Callisto - A reassessment of the reflectance spectra

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...86..355r&link_type=abstract

Icarus (ISSN 0019-1035), vol. 86, Aug. 1990, p. 355-382.

Astronomy and Astrophysics

Astronomy

47

Callisto, Ice, Minerals, Planetary Composition, Spectral Reflectance, Astronomical Models, Magnetite, Montmorillonite, Near Infrared Radiation, Serpentine, Water

Scientific paper

The results of a comparison of laboratory spectral reflectance measurements of particulate mixtures of both hydrated silicates and palagonite with water ice, on the one hand, with two previously unpublished reflectance spectra of Callisto, yield direct support for the hypothesis that the measured reflectance of Callisto includes a substantial nonice component. Hapke's (1981) equations are used in a theoretical model for thorough analysis of telescopic data; a comparison of the calculation results thus obtained with measured reflectance data for Callisto indicate that three-component, ice/magnetite/serpentine mixtures are a better match for telescopic data than two-component ice mixtures.

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