Initial sizes of planetesimals and accretion of the asteroids

Details Initial sizes of planetesimals and accretion of the asteroids Initial sizes of planetesimals and accretion of the asteroids

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011icar..214..671w&link_type=abstract

Icarus, Volume 214, Issue 2, p. 671-684.

Physics

9

Scientific paper

The present asteroid belt preserves a record of an early population with an excess of bodies of size ˜ 100 km. Simulations of accretion from km-sized planetesimals fail to produce this size distribution. Accretion from planetesimals with sizes ˜ 100 m yield size distributions consistent with the asteroid population. Primordial planetesimals may have been smaller than the usual assumption of km-sized bodies.

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