Fragmentation in Molecular Clouds: The Formation of a Stellar Cluster

Details Fragmentation in Molecular Clouds: The Formation of a Stellar Cluster Fragmentation in Molecular Clouds: The Formation of a Stellar Cluster

1998-03-15

arxiv.org/abs/astro-ph/9803171v1

Astronomy and Astrophysics

Astrophysics

5 pages including 2 figures, to appear in "Interstellar Turbulence", eds. P. Franco & A. Carraminana, Cambridge University Pre

Scientific paper

The isothermal gravitational collapse and fragmentation of a molecular cloud region and the subsequent formation of a protostellar cluster is investigated numerically. The clump mass spectrum which forms during the fragmentation phase can be well approximated by a power law distribution dN/dM ~ M^(-1.5). In contrast, the mass spectrum of protostellar cores that form in the centers of Jeans unstable clumps and evolve through accretion and N-body interaction is best described by a log-normal distribution. Assuming a star formation efficiency of ~10%, it is in excellent agreement with the IMF of multiple stellar systems.

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