Triggering of repetitive starbursts in merging galaxies
Triggering of repetitive starbursts in merging galaxies
复制标题
合并星系中重复星暴的触发
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
M. Noguchi
中科院分区：
文献类型：
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作者：
M. Noguchi
星系合并经常被观察到是活跃的星星形成的场所。为了研究并合对气体动力学和星星形成过程的影响，对两个既含有气体云又含有恒星的盘状星系并合过程进行了数值模拟。人们一直认为，两个气体云之间的每次碰撞都会导致星星的形成。结果表明，随着合并过程的进行，云-云碰撞率重复性地增加了近10倍，其重复周期为108年
Merging galaxies are often observed to be the site of active star formation. In order to investigate the effect of mergers on the gas dynamics and the star formation process, numerical simulations for the merger of two disc galaxies which contain gas clouds as well as stars have been carried out. It has been assumed that each collision between two gas clouds leads to star formation. It is found that as the merger proceeds, the cloud-cloud collision rate is repetitively enhanced by up to approximately 10 times with a repetition period of the order of 10 8 yr