Theory of Young Clusters

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Title:		Theory of Young Clusters
Authors:		Bate, M. R.; Bonnell, I. A.
Publication:		Star Formation at High Angular Resolution, International Astronomical Union Symposium 221, held during the XXV General Assembly of the IAU, Sydney, Australia, 22-25 July 2003. Eds: M. Burton, R. Jayawardhana, T. Bourke, p.257
Publication Date:		09/2004
Origin:		ADS; AUTHOR
Bibliographic Code:		2004IAUS..221..257B

Abstract

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.

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