Hostname: page-component-5c6d5d7d68-thh2z Total loading time: 0 Render date: 2024-08-06T13:50:16.508Z Has data issue: false hasContentIssue false
  • English
  • Français

Implications of the Distribution of HI Clouds in the Lower Galactic Halo

Published online by Cambridge University Press:  17 September 2012

H.A. Ford ,
F.J. Lockman  and
N.M. McClure-Griffiths
H.A. Ford
Affiliation:
Centre for Astrophysics and Supercomputing, Swinburne University of Technology, Mail H39, PO Box 218, Hawthorn, Victoria 3122, Australia. e-mail: alyson@astro.swin.edu.au; Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 1710, Australia
F.J. Lockman
Affiliation:
National Radio Astronomy Observatory, PO Box 2, Green Bank, WV 24944, USA
N.M. McClure-Griffiths
Affiliation:
Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 1710, Australia
Get access

Abstract

We have detected hundreds of HI clouds in the lower Galactic halo within the Galactic All-Sky Survey pilot region, a region spanning 325∘≤ l ≤ 343∘ and |b|≤ 20∘. The motions of these clouds are governed by Galactic rotation, they are seen within the disk and up to heights of 2.5 kpc, and they span a wide range of Galactocentric radii. However, these clouds are not uniformly distributed and appear to be associated with Galactic structures such as spiral arms or superbubbles.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 56: The Role of the Disk-Halo Interaction in Galaxy Evolution: Outflow vs. Infall? , 2012 , pp. 285 - 289
Copyright
© EAS, EDP Sciences, 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bregman, J.N., 1980, ApJ, 236, 577CrossRef
Bronfman, L., 2008, Ap&SS, 313, 81
Ford, H.A., McClure-Griffiths, N.M., Lockman, F.J., et al., 2008, ApJ, 688, 290CrossRef
Lockman, F.J., 2002, ApJ, 580, L47CrossRef
Mac Low, M.-M., McCray, R., & Norman, M.L., 1989, ApJ, 337, 141CrossRef
McClure-Griffiths, N.M., Ford, A., Pisano, D.J., et al., 2006, ApJ, 638, 196CrossRef
Pidopryhora, Y., Lockman, F.J., & Shields, J.C., 2007, ApJ, 656, 928CrossRef
Prata, S.W., 1964, Bull. Astr. Inst. Netherlands, 17, 511
Sato, M., et al., 2007, PASJ, 59, 743
Shapiro, P.R., & Field, G.B., 1976, ApJ, 205, 762CrossRef
Simonson, III, S.C., 1971, A&A, 12, 136PubMed