Ganymede and Callisto - Surface textural dichotomies and photometric analysis

Details Ganymede and Callisto - Surface textural dichotomies and photometric analysis Ganymede and Callisto - Surface textural dichotomies and photometric analysis

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...92..312b&link_type=abstract

Icarus (ISSN 0019-1035), vol. 92, Aug. 1991, p. 312-323. Research supported by NASA.

Astronomy and Astrophysics

Astronomy

36

Astronomical Photometry, Callisto, Ganymede, Planetary Surfaces, Surface Roughness, Voyager Project, Astronomical Models, Backscattering, Regolith, Telescopes

Scientific paper

Complete solar phase curves of the Ganymede and Callisto leading and trailing hemispheres, which have been obtained by reducing Voyager imaging observations and combining them with ground-based telescopic data, are presently fit to scattering models in order to derive hemispherical values of the single scattering albedo, the single particle phase function (SPPF), the compaction state (CS) of the optically active portion of the regolith, and the mean slope angle of macroscopic features. While Callisto's leading side is composed of particles that are more strongly backscattering than the trailing side, no hemispheric differences are found in the CS, surface roughness, or SPPF.

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