Formation of Chondrule Precursors in the Presolar Cloud

Details Formation of Chondrule Precursors in the Presolar Cloud Formation of Chondrule Precursors in the Presolar Cloud

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27.1115r&link_type=abstract

Lunar and Planetary Science, volume 27, page 1115

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Chondrules, Chondrules: Precursors, Coagulation, Dust: Aggregates, Presolar Cloud

Scientific paper

In this paper I consider the growth of dust aggregates in the presolar cloud, taking into account their compressibility and possible compaction under the effect of higher velocity collisions. It is assumed that the aggregates could grow initially as fractals of low density and reach the masses of chondrule precursors before they begin to disrupt each other. When the kinetic energy of impacts approaches the strength of the material but is still less than it, collisions might cause compaction of the aggregates instead of destruction. The more compact aggregates experience a smaller number of collisions, and tend to avoid both further increase of mass and catastrophic destruction. This scenario can provide a population of dust aggregates with a relatively narrow size range and could be a good candidate for the chondrule precursors.

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