Physics
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...94..209s&link_type=abstract
Icarus (ISSN 0019-1035), vol. 94, Nov. 1991, p. 209-217.
Physics
4
Celestial Bodies, Comets, Ice, Reflectance, Solar System, Surface Properties, Bidirectional Reflectance, Colloids, Optical Measurement, Specular Reflection
Scientific paper
Bidirectional reflectances have been obtained from particle/ice mixtures akin to the 'dirty' ice surfaces of solar system bodies lacking atmospheres, as the ice sublimed under vacuum to leave a residue of porous refractory particle layers up to 1 mm in thickness. This phenomenon is taken as representative of the 'dust mantles' that may evolve on cometary surfaces and icy asteroids; the formation of porous refractory layers on mantles through sublimation is associated with significant color and reflectance changes. Differences in reflectance and reflectivity gradient between these samples and actual bodies may be due to different mantle-formation physical processes as well as different silicate and carbonaceous material chemistries.
Gustafson Bo A. S.
Stephens John R.
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