Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982sci...216.1405g&link_type=abstract
Science, vol. 216, June 25, 1982, p. 1405-1407. NASA-supported research.
Astronomy and Astrophysics
Astronomy
182
Asteroid Belts, Astronomical Photometry, Chemical Composition, Planetary Composition, Abundance, Albedo, Broadband, Infrared Scanners, Solar Corona, Spectral Reflectance, Asteroids, Composition, Asteroid Belt, Structure, Distribution, Data, Distance, Classification, Formation, Physical Properties, Reflectance, Spectra, Albedo, Thermodynamics, Origin, Characteristics, Radiometry, Spectrophotometry, Procedure, Analysis, Reflectivity, Abundance, Gaps, Hungaria Asteroids, Cybele Asteroids, Hilda Asteroids, Troj
Scientific paper
A variety of observations, mainly albedos derived from 10 and 20 micron radiometry and eight-filter broadband spectrophotometry, were used to show that the asteroid belt is highly structured in composition. The bias-corrected distribution from 1.8 to 5.2 A.U. of the previously defined compositional types C,S,E,R, and M, plus type D and the newly described types F and P, are reported on. In terms of the relative abundances of the types discussed, the asteroid belt appears to be composed of at least six major compositionally distinct regions. The inferred composition of the asteroids in each semimajor axis region is consistent with the theory that the asteroids accreted from the solar nebula at or near their present location.
Gradie Jonathan
Tedesco Edward
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