Mass segregation in young stellar clusters

被引：249
|
作者：
Bonnell, IA [1 ]
Davies, MB [1 ]
机构：
[1] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1998年 / 295卷 / 03期
关键词：
stars; formation; luminosity function; mass function; open clusters and associations; general; individual; Trapezium;
D O I：
10.1046/j.1365-8711.1998.01372.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate the evolutionary effect of dynamical mass segregation in young stellar clusters. Dynamical mass segregation acts on a time-scale of order the relaxation time of a cluster. Although some degree of mass segregation occurs earlier, the position bf massive stars in rich young clusters generally reflects the cluster's initial conditions. In particular, the positions of the massive stars in the Trapezium cluster in Orion cannot be due to dynamical mass segregation, but indicate that they formed in, or near, the centre of the cluster. Implications of this for cluster formation and for the formation of high-mass stars are discussed.
引用
收藏
页码：691 / 698
页数：8
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