The role of collision speed, cloud density, and turbulence in the formation of young massive clusters via cloud–cloud collisions
The role of collision speed, cloud density, and turbulence in the formation of young massive clusters via cloud–cloud collisions
复制标题
碰撞速度、云密度和湍流在云-云碰撞形成年轻大质量星团中的作用
DOI:
10.1093/mnras/staa2857
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发表时间:
2020
影响因子:
4.8
通讯作者:
C. Dobbs
中科院分区:
文献类型:
--
作者:
K. Y. Liow;C. Dobbs
Young massive clusters (YMCs) are recently formed astronomical objects with unusually high star formation rates. We propose the collision of giant molecular clouds (GMCs) as a likely formation mechanism of YMCs, consistent with the YMC conveyor-belt formation mode concluded by other authors. We conducted smoothed particle hydrodynamical simulations of cloud-cloud collisions and explored the effect of the clouds' collision speed, initial cloud density, and the level of cloud turbulence on the global star formation rate and the properties of the clusters formed from the collision. We show that greater collision speed, greater initial cloud density and lower turbulence increase the overall star formation rate and produce clusters with greater cluster mass. In general, collisions with relative velocity $\gtrsim 25$ km/s, initial cloud density $\gtrsim 250$ cm$^{-3}$, and turbulence of $\approx 2.5$ km/s can produce massive clusters with properties resembling the observed Milky Way YMCs.
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DOI:
10.1017/s1743921319007646
发表时间:
2019
期刊:
Proceedings of the International Astronomical Union
影响因子:
--
作者:
Li, Hui;Gnedin, Oleg
通讯作者:
Gnedin, Oleg
影响因子:
4.8
作者:
Li, Hui;Vogelsberger, Mark;Marinacci, Federico;Gnedin, Oleg Y
通讯作者:
Gnedin, Oleg Y
DOI:
10.1088/0004-637x/784/1/3
发表时间:
2014
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Colombo;Hughes;Schinnerer
通讯作者:
Schinnerer
DOI:
10.3847/1538-4357/ab0d1e
发表时间:
2019-03
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Molly K. Finn;Kelsey E. Johnson;C. Brogan;C. Wilson;R. Indebetouw;W. Harris;J. Kamenetzky;A. Bemis
通讯作者:
Molly K. Finn;Kelsey E. Johnson;C. Brogan;C. Wilson;R. Indebetouw;W. Harris;J. Kamenetzky;A. Bemis
影响因子:
3.2
作者:
V. Mannings;A. Boss;S. Russell
通讯作者:
V. Mannings;A. Boss;S. Russell