Supershells in the multi-phase Milky Way

Insights from hi synthesis imaging and CO surveys

J. R. Dawson, N. M. McClure-Griffiths, Y. Fukui

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationThe Role of the Disk-Halo Interaction in Galaxy Evolution
Subtitle of host publicationOutflows vs. Infall?
EditorsMiguel A. de Avillez
Place of PublicationFrance
PublisherEAS Publications Series
Pages155-158
Number of pages4
Volume56
ISBN (Print)9782759807871
DOIs
Publication statusPublished - 2012
Externally publishedYes
EventThe Role of the Disk-Halo Interaction in Galaxy Evolution: Outflows vs. Infall? - Espinho, Portugal
Duration: 18 Aug 200822 Aug 2008

Publication series

NameEAS Publications Series
Volume56
ISSN (Print)16334760
ISSN (Electronic)16381963

Other

OtherThe Role of the Disk-Halo Interaction in Galaxy Evolution: Outflows vs. Infall?
CountryPortugal
CityEspinho
Period18/08/0822/08/08

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