Modeling the reflectance spectrum of Callisto 0. 25 to 4. 1 microns

Journal Article · Fri Feb 01 00:00:00 EST 1991 · Icarus (International Journal of the Solar System); (USA)

DOI:https://doi.org/10.1016/0019-1035(91)90180-2· OSTI ID:5756459

Calvin, W M; Clark, R N ^[1]

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1. USGS, Federal Center, Denver, CO (USA)

Models employing Hapke's (1981) radiative transfer theory are presented for the 0.2-4.1 micron reflectance spectrum. A simultaneous intimate, as well as aereal, mixture solution of ice and dark material is envisioned, in order to satisfy both absorption band depths and reflectance levels. The models indicate that the surface's ice component is rather large-grained, and that the major spectral features above about 2.5 microns cannot be accounted for by the ice. Spectra obtained for the nonice material were similar to each other; their absorption features resemble hydrated silicates bearing both oxidation states of iron. 33 refs.

• OSTI ID: 5756459
• Journal Information: Icarus (International Journal of the Solar System); (USA), Vol. 89; ISSN 0019-1035
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
JUPITER PLANET
SATELLITES
ABSORPTION SPECTRA
CHEMICAL COMPOSITION
ICE
INFRARED SPECTRA
IRON
MAGNESIUM
MATHEMATICAL MODELS
MINERALOGY
RADIATION TRANSPORT
SPECTRAL REFLECTANCE
ULTRAVIOLET SPECTRA
ALKALINE EARTH METALS
ELEMENTS
METALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLANETS
SPECTRA
TRANSITION ELEMENTS
640107* - Astrophysics & Cosmology- Planetary Phenomena