Fragmentation of molecular clouds: The initial phase of a stellar cluster

被引：190

作者：

Klessen, RS ^{[1
]}

Burkert, A ^{[1
]}

Bate, MR ^{[1
]}

机构：

[1] Max Planck Inst Astron, D-69117 Heidelberg, Germany

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 501卷 / 02期

关键词：

ISM : kinematics and dynamics; ISM : structure; methods : numerical; stars : formation;

D O I：

10.1086/311471

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The isothermal gravitational collapse and fragmentation of a region within a molecular cloud and the subsequent formation of a protostellar cluster are investigated numerically. The clump mass spectrum that forms during the fragmentation phase can be well approximated by a power-law distribution dN/dM proportional to M(-1.5). In contrast, the mass spectrum of protostellar cores that form in the centers of Jeans-unstable clumps and that evolve through accretion and N-body interactions is described by a lognormal distribution with a width that is in excellent agreement with observations of multiple stellar systems.

引用

页码：L205 / L208

页数：4

共 38 条

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