Modeling of S-type asteroid spectra using primitive achondrites and iron meteorites

Details Modeling of S-type asteroid spectra using primitive achondrites and iron meteorites Modeling of S-type asteroid spectra using primitive achondrites and iron meteorites

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993icar..102..107h&link_type=abstract

Icarus (ISSN 0019-1035), vol. 102, no. 1, p. 107-116.

Computer Science

38

Achondrites, Asteroids, Chemical Fractionation, Iron Meteorites, Spectral Reflectance, Absorption Spectra, Curve Fitting, Specular Reflection, Asteroids, S Asteroids, Spectra, Stony Meteorites, Achondrites, Models, Meteorites, Iron Meteorites, Analogs, Reflectance, Laboratory Studies, Comparisons, Absorption, Metal, Surface, Parent Material, Alh Meteorites, Samples, Meteorite, Yamato Meteorites, Mac Meteorites, Origin, Formation, Catalog, Chondritic Material, Lodran, Mac 88177, Y791491, Alha77081, Y74357, M

Scientific paper

The stony iron model of S asteroids is examined using recently measured telescopic reflectance spectra of 40 S asteroids and laboratory spectra of six primitive achondrites and an iron meteorite. It is concluded that 40 percent of well-measured reflectance spectra of the S asteroids can be fitted by the model composed of an iron meteorite and six representative primitive achondrites. The hypothesis that the S asteroids are composed of primitive achondrites strongly bound together by metallic iron networks can explain the extremely small population of primitive achondrites in meteorite collections. If all the larger asteroids initially formed of ordinary chondritelike source materials were altered to S-asteroids, the apparent absence of ordinary chondrites in the main belt may be due to the fact that they are too small to have their reflectance spectra measured.

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