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Theory of Young Clusters

Published online by Cambridge University Press:  23 September 2016

Matthew R. Bate
Affiliation:
School of Physics, University of Exeter, Exeter EX4 4QL, United Kingdom
Ian A. Bonnell
Affiliation:
School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9SS, United Kingdom

Abstract

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We review recent results from hydrodynamical calculations of the formation of young stellar clusters. The calculations present a highly dynamical picture of star formation where the mass function of stars originates from competitive accretion between protostars and dynamical ejections which halt accretion. Large star clusters form hierarchically; a molecular cloud forms many small clusters that later merge into one large cluster, erasing the initial substructure. Using calculations that resolve fragmentation down to the opacity limit, we examine the implications of dynamical star formation for the IMF, the formation of brown dwarfs and close binaries, and the sizes of protoplanetary discs. Finally, we discuss the dependence of the results on the initial conditions.

Type
Part 5: Low Mass Star Formation
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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