Cold Atomic Gas in the CGPS and Beyond
Sep, 201014 pages
Part of Proceedings, The Dynamic Interstellar Medium: A Celebration of the Canadian Galactic Plane Survey : Naramata, British Columbia, Canada, June 6-10, 2010, 111-125
Published in:
- ASP Conf.Ser. 438 (2011) 111-125
Contribution to:
- Published: 2011
e-Print:
- 1009.0966 [astro-ph.GA]
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Abstract: (Astronomical Society of the Pacific)
The Canadian Galactic Plane Survey has opened new vistas on the Milky Way,including cold hydrogen clouds that bridge a critical gap between theclassical diffuse interstellar medium and the gravitationally bound molecularclouds that can form stars. The CGPS and its fellow IGPS surveys revealedthese transitional clouds to be surprisingly widespread as HIself-absorption (HISA) shadows against the Galactic HI emissionbackground. The richness of the IGPS data allows detailed examination ofHISA cloud spatial structure, gas properties, Galactic distribution, andcorrespondence with molecular gas, all of which can constrain models of coldHI clouds in the evolving interstellar medium. Augmenting thelandmark IGPS effort are new and upcoming surveys with the Arecibo 305m andAustralian SKA Pathfinder telescopes.References(92)
Figures(17)