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Numerical Experiments on Planetesimal Aggregation during the Formation of the Solar System

Published online by Cambridge University Press:  25 April 2016

K. Hourigan
K. Hourigan*
Affiliation:
Department of Mathematics, Monash University
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Extract

A major area of difficulty in the cosmogony of the solar system is understanding how a large number of small planetesimals, which have condensed from the primordial gas, can aggregate into the ordered planetary system present today. Theories involving aggregation within a gaseous disc [e.g. Cameron (1973)] suffer the common difficulty that the particles, once condensed, are no longer supported by the radial gas pressure gradient and spiral rapidly in towards the Sun. Most of the planetesimals are dragged in to the central body in times several orders of magnitude less than would be required for larger bodies to accrete (Goldreich & Ward 1973).

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 3 , Issue 2 , September 1977 , pp. 169 - 171
Copyright
Copyright © Astronomical Society of Australia 1977

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References

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