Abstract
A REMARKABLE feature of the distributions of CO, H2, HI, HII and dust in the Galaxy is that their most dense regions form a broad ring-like structure surrounding the galactic centre, along with a dense nuclear disk located at the centre1–4. Between the ring and the nuclear disk there exists a region of very low density. The radius of the nuclear disk is approximately 600 pc, and the ring extends from an inner radius of 2–4 kpc out to a radius greater than 15 kpc for HI, but to only 8–10 kpc for the interstellar components expected to be generated by spiral shocks (namely CO, H2 and HII). We point out here that this structure is a possible consequence of a postulated stellar bar at the centre of the galaxy.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Rougoor, G. W. Bull. Astr. Inst. Neth. 17, 381 (1964).
Scoville, N. Z., Solomon, P. M. & Jefferts, K. B. Astrophys. J. Lett. 187, L63 (1974).
Scoville, N. Z. & Solomon, P. M. Astrophys. J. Lett. 199, L105 (1975).
Burton, W. B. et al. Astrophys. J. 202, 30 (1975)
Stecker, F. W. Nature 260, 412 (1976).
Nelson, A. H. & Matsuda, T. Mon. Not. R. astr. Soc.(in the press).
Shu, F. H. Am. Scient. 61, 524 (1973).
Sorensen, S. A., Matsuda, T. & Fujimoto, M. Astrophys. Space Sci. 43, 491 (1976).
Sandage, A. The Hubble Atlas of Galaxies, 44–46 (Carnegie Institution of Washington, 1961).
Sancisi, R. in La Dynamique des Galaxies Spirales, Colloque International CNRS 241, 403 (1975).
Mishurov, L. S. & Suchkov, A. A. Soviet Phys. Usp. 17, 85 (1974).
Contopoulos, G. in La Dynamique des Galaxies Spirales, Colloque International CNRS 241, 21 (1975).
Simonson, S. C. & Mader, G. L. Astr. Astrophys. 27, 337 (1973).
Cohen, R. J. & Davies, R. D. Mon. Not. R. astr. Soc. 175, 1 (1976).
Rougoor, G. W. & Oort, J. H. Proc. natn. Acad. Sci. U.S.A. 46, 1 (1960).
Rubin, V. C. & Ford, W. K. Astrophys. J. 159, 379 (1970).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
MATSUDA, T., NELSON, A. A galactic vacuum cleaner?. Nature 266, 607–608 (1977). https://doi.org/10.1038/266607a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/266607a0
This article is cited by
-
Gas dynamics and structure of galaxies
Astrophysics and Space Science (2008)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.