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Gas in galactic halos

Published online by Cambridge University Press:  05 March 2015

Ralf-Jürgen Dettmar
Ralf-Jürgen Dettmar*
Affiliation:
Astronomical Institute, Ruhr-University Bochum, 44780Bochum, Germany email: dettmar@astro.rub.de
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Abstract

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The interstellar medium in galactic halos is described as a consequence of feedback mechanisms from processes related to star-formation in the disk. The presence of gas in galactic halos is also expected due to accretion of gas from the circumgalactic environment. The observational evidence for gas in galactic halos - from the hot X-ray emitting coronal phase to cool molecular gas and dust - is reviewed and discussed in the context of current models of the ISM and the “infall vs. outflow“ debate.

Keywords

galaxies: ISMgalaxies: evolutiongalaxies: halo
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Highlights H16: Highlights of Astronomy , August 2012 , pp. 596 - 597
Copyright
Copyright © International Astronomical Union 2015 

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