Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-02T19:10:32.304Z Has data issue: false hasContentIssue false
  • English
  • Français

II. The Galaxy

Local structure and stellar motions

Published online by Cambridge University Press:  14 August 2015

N. G. Roman

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.

The region within about a kiloparsec of the sun contains no globular clusters, and few associations, planetary nebulae, novae, or Cepheids; the interpretation of 21-cm observations is complicated by peculiar motions which are comparable with galactic rotation effects. Nevertheless, this is an extremely important region for the study of galactic structure. Not only are all distance calibrations ultimately based on objects near the sun, but only in this region do we have the resolution necessary to examine the detail of galactic structure and only here can we study the numerous fainter members of the various stellar populations. As elsewhere, the problems are two-fold, the efficient selection of those objects whose study is the most informative and the choice of the methods of obtaining the greatest amount of information about those objects.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 7: Second Conference on co-ordination of Galactic Research , 1959 , pp. 65 - 80
Copyright
Copyright © Cambridge University Press 1959 

References

[1] Elvius, T. Stockholms Obs. Ann. 16, no. 5, 1951; 19, no. 3, 1956. The catalogs are published in Stockholms Obs, Ann. 16, no. 4, 1951 and 18, no. 7, 1955.Google Scholar
[2] Johnson, H. L. and Morgan, W. W. Astroph. J. 117, 313, 1953; Cont. McDonald Obs., no. 216.Google Scholar
[3] See also Pub. Astr. Soc. Pacif. 69, 109, 1957; Pub. McCormick Obs. 12, Part 4.Google Scholar
[4] Heard, J. F. Pub. David Dunlap Obs., Toronto, 2, no. 4, 1956.Google Scholar
[5] See also Astr. Nachr. 283, 213, 1956; Veroff. Astr. Inst. Brno, no. 2; Bull. Astr. Inst. Czechoslovakia. 8, 177, 1957.Google Scholar
[6] Duflot, M. and Fehrenbach, G. Publ. Obs. Haute Provence 3, no. 41, 49, 1956.Google Scholar
[7] Gollnow, H. and Hagemann, G. A.J. 61, 399, 1956.CrossRefGoogle Scholar
[8] See also Strömgren, B. Vistas in Astronomy, 1336, 1956 (Pergamon Press, London) and Proc. Third Berkeley Symp. on Mathematical Statistics and Probability, vol. in, 49, 1956 (University of California Press).Google Scholar
[9] See also Chalonge, D. Ann. d'astroph. 19, 258, 1956 and Vistas in Astronomy, 1328, 1956 (Pergamon Press, London).Google Scholar
[10] McCuskey, S. W. Astroph. J. 123, 458, 1956.Google Scholar