Computer Science
Scientific paper
Dec 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icar...56..398l&link_type=abstract
Icarus (ISSN 0019-1035), vol. 56, Dec. 1983, p. 398-408.
Computer Science
22
Asteroids, Carbonaceous Chondrites, Infrared Absorption, Meteoritic Composition, Planetary Composition, Planetary Surfaces, Ceres Asteroid, Hydrates, Mineralogy, Planetary Evolution, Silicates, Spectral Reflectance
Scientific paper
High resolution spectroscopic observations of asteroid 2 Pallas from 1.7-3.5 microns are reported. These data are combined with previous measurements from 0.4-1.7 microns to interpret Pallas' surface mineralogy. Evidence is found for low-Fe(2+) hydrated silicates, opaque components, and low Fe(2+) anhydrous silicates. This assemblage is very similar to carbonaceous chondrite matrix material such as is found in type CI and CM meteorites, but it has been subjected to substantial aqueous alteration and there is a major extraneous anhydrous silicate component. This composition is compared to that of asteroid 1 Ceres. Although there are substantial differences in their broad band spectral reflectances it appears that both asteroids are genetically related to know carbonaceous chondrites.
Feierberg M. A.
Larson Harold P.
Lebofsky Larry A.
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