Asteroid size distribution - Implications for the origin of stony-iron and iron meteorites

Details Asteroid size distribution - Implications for the origin of stony-iron and iron meteorites Asteroid size distribution - Implications for the origin of stony-iron and iron meteorites

Dec 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974georl...1..341c&link_type=abstract

Geophysical Research Letters, vol. 1, Dec. 1974, p. 341-344.

Astronomy and Astrophysics

Astrophysics

8

Asteroids, Iron Meteorites, Planetary Evolution, Size (Dimensions), Stony Meteorites, Stony-Iron Meteorites, Albedo, Carbonaceous Meteorites, Frequency Distribution, Meteoritic Composition, Planetary Composition, Polarimetry, Radiometers

Scientific paper

The diameter-frequency distribution of large asteroids is analyzed, based on polarimetric and radiometric albedo data. The population of carbonaceous objects shows a high degree of fragmentation. But a class of apparently stony-iron asteroids shows a relative excess frequency between diameters of 100 to 200 km. It is proposed that the latter objects are predominantly metallic cores of a group of chemically differentiated planetesimals all of which (except Vesta) have suffered catastrophic collisions. Collision frequencies in the asteroid belt may have been much greater than previously supposed.

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