Distribution of taxonomic classes in the main belt of asteroids

Details Distribution of taxonomic classes in the main belt of asteroids Distribution of taxonomic classes in the main belt of asteroids

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icar..162...10m&link_type=abstract

Icarus, Volume 162, Issue 1, p. 10-21.

Computer Science

26

Asteroids, Spectroscopy

Scientific paper

In this work we analyze the bias-corrected taxonomic distribution of asteroids in the Main Belt based on the results of two large spectroscopic surveys with a total of 2026 objects. With the goal of minimizing selection effects that could affect our results, analyses were also performed on a sample from which the dynamical families and the small objects were removed.
Our results differ significantly from the majority of previous work. The most notable difference concerns the distribution in semi-major axis of the S class (and its subtypes), found to compose a significant fraction of the asteroid population out to 3.0 AU.
Also, we found differences in the distribution of the classes as we considered varying ranges of eccentricities and inclinations.
Based on observations made with the 1.52-m telescope at the European Southern Observatory (La Silla, Chile) under the agreement with the CNPq/Observatório Nacional (Brazil).

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