Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-23T19:52:44.988Z Has data issue: false hasContentIssue false
  • English
  • Français

Two Double Galaxy Systems

Published online by Cambridge University Press:  25 April 2016

B. M. Lewis
B. M. Lewis*
Affiliation:
Mount Stromlo and Siding Spring Observatories, Australian National University, Canberra
Get access Rights & Permissions [Opens in a new window]

Extract

It is generally assumed from an inspection of prints of non-magellanic spiral galaxies that all constituents, including the HI, are distributed with a large-scale circular symmetry in the plane of the galaxy. This assumption is supported by the expectation that any primordial asymmetry in the mass distribution would have disintegrated by the present epoch under the shearing effects of differential rotation into an approximately circularly symmetric ring. It is therefore surprising to find that the recent high-resolution studies of M 31, M 101, NGC 300 and our own galaxy all show that the HI centroid is significantly displaced from the nucleus. This is a sign that the HI distribution is markedly asymmetric.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 1 , Issue 6 , September 1969 , pp. 288 - 289
Copyright
Copyright © Astronomical Society of Australia 1969

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

1 Roberts, M. S., Ap. J., 144, 639 (1966).Google Scholar
2 Gottesman, S. T., Davies, R. D. and Reddish, V. C., MNRAS, 133, 359 (1966).Google Scholar
3 Gottesman, S. T., thesis, Univ. of Manchester, 1967.Google Scholar
4 Shobbrook, R. R. and Robinson, B. J., Aust. J. Phys., 20, 131 (1967).CrossRefGoogle Scholar
5 Kerr, F. J. and Westerhout, G., ‘Stars and Stellar Systems’, Vol. 5, ed. Blaauw, A. and Schmidt, M., Univ. of Chicago Press, Chicago 1965.Google Scholar
6 Beale, J. S. and Davies, R. D., Nature, 221, 531 (1969).Google Scholar
7 Lewis, B. M., thesis, Australian National University, 1969.Google Scholar
8 Lewis, B. M., Proc. ASA, 1, 104 (1968).Google Scholar