Dynamical Methods to Estimate the Age of Asteroid Families

Details Dynamical Methods to Estimate the Age of Asteroid Families Dynamical Methods to Estimate the Age of Asteroid Families

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007padeu..19..187k&link_type=abstract

Publications of the Astronomy Department of the Eötvös University (PADEU), 2007, ISBN 963 463 557, Vol. 19. Edited by B. Érdi a

Astronomy and Astrophysics

Astronomy

Scientific paper

We present here some new results on the determination of the ages of asteroid families based on the analysis of motion of their members. Two independent methods have been used to assess the age of Veritas family, one making use of dynamical evolution of the stable family members, and the other where we analyze members with chaotic motion. In the former case we look for the refined age estimate by searching for convergence of angular elements to a narrow range of values acquired by the fragments immediately after the family formation event. In the latter case we compute the rate of chaotic diffusion of the resonant family members and estimate the time needed to spread from an initially compact distribution to the presently observed one.

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