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The Supershell-Molecular Cloud Connection in the Milky Way and Beyond


Dawson, JR and McClure-Griffiths, NM and Fukui, Y and Dickey, JM and Wong, T and Hughes, A and Kawamura, A, The Supershell-Molecular Cloud Connection in the Milky Way and Beyond, Proceedings of the International Astronomical Union, 20-24 August 2012, Bejing, China, pp. 83-86. ISSN 1743-9213 (2012) [Non Refereed Conference Paper]

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DOI: doi:10.1017/S1743921313000525


The role of large-scale stellar feedback in the formation of molecular clouds has been investigated observationally by examining the relationship between Hi and 12CO(J = 1−0) in supershells. Detailed parsec-resolution case studies of two Milky Way supershells demonstrate an enhanced level of molecularisation over both objects, and hence provide the first quantitative observational evidence of increased molecular cloud production in volumes of space affected by supershell activity. Recent results on supergiant shells in the LMC suggest that while they do indeed help to organise the ISM into over-dense structures, their global contribution to molecular cloud formation is of the order of only бн 10%.

Item Details

Item Type:Non Refereed Conference Paper
Keywords:galaxies: ISM — ISM: bubbles — ISM: evolution — ISM: molecules — Magellanic Clouds
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Dawson, JR (Dr Joanne Dawson)
UTAS Author:Dickey, JM (Professor John Dickey)
ID Code:85112
Year Published:2012
Deposited By:Mathematics and Physics
Deposited On:2013-06-14
Last Modified:2013-06-27

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