TY - GEN
T1 - Supershells in the multi-phase Milky Way
T2 - The Role of the Disk-Halo Interaction in Galaxy Evolution: Outflows vs. Infall?
AU - Dawson, J. R.
AU - McClure-Griffiths, N. M.
AU - Fukui, Y.
PY - 2012
Y1 - 2012
N2 - We present new parsec-scale resolution data from a multiphase study of the ISM in the walls of Galactic supershells. HI synthesis images and CO survey data reveal a wealth of substructure, including dense-tipped fingers and extended molecular clouds embedded in shell walls. We briefly consider formation scenarios for these features, and suggest that both the interaction of an expanding shell with pre-existing dense clouds, as well as in-situ formation of CNM and molecular gas, are likely to be relevant. Future work will also examine the role of instabilities in structure formation and breakup, and will investigate the presence of high-altitude gas associated with supershells and chimneys.
AB - We present new parsec-scale resolution data from a multiphase study of the ISM in the walls of Galactic supershells. HI synthesis images and CO survey data reveal a wealth of substructure, including dense-tipped fingers and extended molecular clouds embedded in shell walls. We briefly consider formation scenarios for these features, and suggest that both the interaction of an expanding shell with pre-existing dense clouds, as well as in-situ formation of CNM and molecular gas, are likely to be relevant. Future work will also examine the role of instabilities in structure formation and breakup, and will investigate the presence of high-altitude gas associated with supershells and chimneys.
UR - http://www.scopus.com/inward/record.url?scp=84878301842&partnerID=8YFLogxK
U2 - 10.1051/eas/1256022
DO - 10.1051/eas/1256022
M3 - Conference contribution
SN - 9782759807871
T3 - EAS Publications Series
SP - 155
EP - 158
BT - The Role of the Disk-Halo Interaction in Galaxy Evolution
Y2 - 18 August 2008 through 22 August 2008
ER -