Forming misaligned stellar disks around a massive black hole: cloud infall in the Galactic center

被引:0
|
作者
Lucas, William [1 ]
Bonnell, Ian [1 ]
Davies, Melvyn [2 ]
Rice, Ken [3 ]
机构
[1] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland
[2] Lund Observ, Dept Astron & Theoret Phys, SE-22100 Lund, Sweden
[3] Univ Edinburgh, Inst Astron, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland
关键词
Galaxy: center; stars: formation; accretion; accretion disks; hydrodynamics;
D O I
10.1017/S1743921314000672
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The innermost parsec around Sgr A* has been found to play host to two disks or streamers of O and W-R stars. They are misaligned by an angle approaching 90 degrees. That the stars are approximately coeval indicates that they formed in the same event rather than independently. We have performed smoothed particle hydrodynamic simulations of the infall of a single prolate cloud towards a massive black hole. As the cloud is disrupted, the large spread in angular momentum can, if conditions allow, lead to the creation of misaligned gas disks. In turn, stars may form within those disks. We are now investigating the origins of these clouds in the Galactic center (GC) region.
引用
收藏
页码:245 / 247
页数:3
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