Hostname: page-component-848d4c4894-75dct Total loading time: 0 Render date: 2024-05-21T05:20:20.635Z Has data issue: false hasContentIssue false
  • English
  • Français

Formation of Molecular Gas Rings in Galaxies: without Density Waves, Merging or Nuclear Activity

Published online by Cambridge University Press:  03 August 2017

H. Lesch ,
P.L. Biermann ,
H.P. Reuter  and
R Wielebinski
H. Lesch
Affiliation:
Landessternwarte Königstuhl 6900 Heidelberg, FRG
P.L. Biermann
Affiliation:
Max-Planck Institut für Radioastronomie Auf dem Hügel 69 5300 Bonn, FRG
H.P. Reuter
Affiliation:
Max-Planck Institut für Radioastronomie Auf dem Hügel 69 5300 Bonn, FRG
R Wielebinski
Affiliation:
Max-Planck Institut für Radioastronomie Auf dem Hügel 69 5300 Bonn, FRG

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Ringlike structures (in Hα, CO and radio continuum) in central galactic regions have been observed in a number of objects. They seem to be a basic feature of galactic structure (for references see Dickman et al., 1988). These observations can be summarized as follows:

The typical mass of these rings is 108 − 109M⊙.

The gas distribution is smoothly decreasing from the ring into the innermost galactic regions. The rings appear always at the turnover radius where the galactic rotation turns from rigid to differential rotation.

Type
VIII- Bars, Rings and Starbursts
Information
Symposium - International Astronomical Union , Volume 146: Dynamics of Galaxies and their Molecular Cloud Distributions , 1991 , pp. 269 - 271
Copyright
Copyright © Kluwer 1991 

References

Arsenault, R., Boulesteix, J. Georgelin, Y., Roy, J.R.: 1988, Astron. Astrophys. 200, 29 Google Scholar
Atherton, P.D., Reay, N.K., Taylor, K.: 1985, Mon. Not. Roy. Astr. Soc. 216, 17P (1985) CrossRefGoogle Scholar
Bosma, A.: 1981, Astron J. 86, 1825 CrossRefGoogle Scholar
Combes, F.: 1989 private communication Google Scholar
Combes, F.: 1990b, these proceedings Google Scholar
Combes, F., Gerin, A.: 1985, Astron. Astrophys. 150, 327 Google Scholar
Combes, F., Dupraz, C., Gerin, M.: 1990, in Dynamics and Interactions of Galaxies, ed. Wielen, R., Springer, Berlin, p. 205 CrossRefGoogle Scholar
Däther, M., Biermann, P.L.: 1990, Astron. Astrophys. 235, 55 Google Scholar
Dickman, R., Snell, R. and Young, I., (eds.): 1988, Molecular Clouds in the Milky Way and External Galaxies Springer, Berlin CrossRefGoogle Scholar
Duschl, W.: 1988, Astron. Astrophys. 194, 33 Google Scholar
Gerin, M., Nakai, N., Combes, F.: 1988, Astron. Astrophys. 201, 47 Google Scholar
Icke, V.: 1979, Astron. Astrophys. 78, 21 Google Scholar
Lesch, H., Biermann, P.L., Crusius, A., Reuter, H.P., Dahlem, M., Barteldrees, A., Wielebinski, R.: 1990, Mon. Not. Roy. Astr. Soc. 242, 194 CrossRefGoogle Scholar
Loiseau, N., Reuter, H.P., Wielebinski, R., Klein, U.: 1988, Astron. Astrophys. 200, L1 Google Scholar
Lüst, R.: 1952, Zeitschr. für Naturforschung 71, 87 CrossRefGoogle Scholar
Rubin, V.C., Ford, W.K., Thonnard, N.: 1982, Astrophys. J. 261, 439 CrossRefGoogle Scholar