Numerical results on low mass star and brown dwarf multiplicity

被引：0
|
作者：
Delgado-Donate, E [1 ]
Clarke, C [1 ]
机构：
[1] AlbaNova Univ Ctr, Stockholm Observ, S-10691 Stockholm, Sweden
来源：
Low-Mass Stars and Brown Dwarfs - IMF Accretion and Activity | 2005年 / 76卷 / 02期
关键词：
star formation; binary stars; initial mass function; brown dwarfs;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have undertaken a series of hydrodynamic + N-body simulations in order to explore the properties of young stars. Our results suggest that the IMF may be sensitive to environment in its substellar region, with more brown dwarfs being formed where clusters are denser or more compact. We find that multiple stars are a natural outcome of collapsing turbulent flows, with a high incidence of N > 2 multiples. We find a positive correlation of multiplicity with primary mass but a companion frequency that decreases with age. Binary brown dwarfs are rarely formed, in conflict with observations. Brown dwarfs as companions are predominantly found orbiting binaries or triples at large separations.
引用
收藏
页码：223 / 228
页数：6
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