Hostname: page-component-7c8c6479df-5xszh Total loading time: 0 Render date: 2024-03-29T12:34:37.496Z Has data issue: false hasContentIssue false

Kinematics of Multiphase Extraplanar Gas in Spiral Galaxies

Published online by Cambridge University Press:  17 September 2012

G. Heald*
Affiliation:
ASTRON, PO Box 2, 7990 AA Dwingeloo, The Netherlands. email: heald@astron.nl;
Get access

Abstract

Multiphase gas has been observed at large vertical distances above the star forming disk in several nearby spirals. Much of this gas is likely a by-product of star formation processes in the disk, but some may trace gas accretion from the intergalactic medium. High quality observations of the distribution and kinematics of this extraplanar gas shed light on the relative importance of these critical processes, and their contribution to the redistribution and replenishment of the galaxy’s reservoir of star forming material. We present recent observations of the kinematics of ionized and neutral extraplanar gas in several nearby galaxies. The balance between infall and outflow implied by the observations is discussed.

Type
Research Article
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

Fraternali, F., 2005, ASPC, 331, 239
Fraternali, F., & Binney, J.J., MNRAS, 386, 935CrossRef
Heald, G.H., 2006a, ApJ, 636, 181CrossRef
Heald, G.H., 2006b, ApJ, 647, 1018CrossRef
Heald, G.H., 2007, ApJ, 663, 933CrossRef
Heald, G., & Oosterloo, T.A., 2008, ASPC, 396, 267
Kamphuis, P., 2007, A&A, 468, 951
Kregel, M., & van der Kruit, P.C., 2004, MNRAS, 352, 787CrossRef
Oosterloo, T., 2007, AJ, 134, 1019CrossRef
Rand, R.J., 1996, ApJ, 462, 712CrossRef
Rossa, J., & Dettmar, R.-J., 2003, A&A, 406, 493
Sancisi, R., 2008, A&ARv, 15, 189