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On the physical mechanisms governing the cloud lifecycle in the Central Molecular Zone of the Milky Way

Jeffreson, S M R; Kruijssen, J. M. Diederik; Krumholz, Mark; Longmore, Steven N

Description

We apply an analytic theory for environmentally dependent molecular cloud lifetimes to the Central Molecular Zone of the Milky Way. Within this theory, the cloud lifetime in the Galactic Centre is obtained by combining the time-scales for gravitational instability, galactic shear, epicyclic perturbations, and cloud–cloud collisions. We find that at galactocentric radii ∼45–120 pc, corresponding to the location of the ‘100-pc stream’, cloud evolution is primarily dominated by gravitational...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
URI: http://hdl.handle.net/1885/160451
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/sty1154

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