Source of the optical red-slope in iron-rich meteorites

Details Source of the optical red-slope in iron-rich meteorites Source of the optical red-slope in iron-rich meteorites

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pggp.rept...84b&link_type=abstract

In NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986 p 84 (SEE N87-23341 16-91)

Physics

Geophysics

Asteroids, Chondrites, Spectrum Analysis, Surface Properties, Chemical Composition, Geometry, Iron, Reflectance

Scientific paper

The relationship between ordinary chondrites and S-type asteroids is an unresolved issue in meteorite science. S-type asteroids exhibit a positively red-sloped spectrum that is interpreted to indicate the presence of elemental iron on the surfaces. The characteristic red-sloped spectrum of iron-rich meteorites is produced by only the specular component of the reflectance. Complex metallic surfaces can be modeled as linear mixtures of specular and nonspecular components. It is the geometry of the metal on a surface and its interaction with surrounding material, rather than the absolute amount of metal, that determine the redness of resulting spectra. In order to distinguish between ordinary chondrite and differentiated parent bodies it is important to understand how regolith processes affect the nature and form of metal on asteroid surfaces.

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