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Tuesday 26 May 2020[journal Club] Title: Simulating the formation of young massive clusters via cloud-cloud collision

Kong Liow - University of Exeter

Zoom 11:15-11:50

Young massive clusters (YMCs) are recently formed astronomical objects with unusually high star formation rate. 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 on cloud-cloud collision and explored the effect of clouds' collisional speed, initial cloud density, and the level of cloud turbulence on the global star formation rate and the properties of the massive clusters formed from the collision. We show that greater collisional 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 ?10kms, initial cloud density ?250pcm, and turbulence of ≈2kms can produce massive clusters with properties resembling the observed Milky Way YMCs.


Due to the current closure of the campus this talk will be conducted online using Zoom

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