期刊
ASTRONOMY & ASTROPHYSICS
卷 452, 期 2, 页码 487-492出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20054026
关键词
stars : formation
We investigate the effect of the turbulent power spectrum (P(k) proportional to k(-n), with n = 3, 4 or 5) on the fragmentation of low-mass cores, by means of SPH simulations. We adopt initial density profiles and low levels of turbulence based on observation, and for each n-value we conduct an ensemble of simulations with different initial seeds for the turbulent velocity field, so as to obtain reasonable statistics. We find that when power is concentrated at larger scales (i.e. for larger n), more protostellar objects form and there is a higher proportion of low-mass stars and brown dwarfs. This is in direct contrast with the recent results of Delgado Donate et al., presumably because they adopted much higher levels of turbulence.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据