Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-29T12:50:33.875Z Has data issue: false hasContentIssue false
  • English
  • Français

Statistics of spiral patterns and comparison of our Galaxy with other galaxies

Published online by Cambridge University Press:  14 August 2015

G. De Vaucouleurs
G. De Vaucouleurs*
Affiliation:
University of Texas, Austin, Tex., U.S.A.

Abstract

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.

Apparent relative frequencies of various types of spirals are given for 900 spirals with the best revised Hubble classifications. Mean diameters of inner ring structures vary from 2.1 kpc in ordinary spirals (SA) to 4.4 kpc in barred spirals (SB) with a total range of 10 to 1 within each type. The probable morphological type of our galaxy is estimated from 6 criteria (multiplicity of spiral pattern, inner ring diameter, broken ring structure, radio structure of nucleus, Yerkes type, HI diagram); arguments advanced in 1963 for an SAB(rs) structure of the inner regions of the galactic system are strengthened by this analysis. Several examples of galaxies in this area of the classification plane are discussed.

Type
Part I/Spiral Structure in Galaxies
Information
Symposium - International Astronomical Union , Volume 38: The Spiral Structure of our Galaxy , 1970 , pp. 18 - 25
Copyright
Copyright © Reidel 1970 

References

Burbidge, E. M.: 1967, IAU Symposium No. 31, p. 209.CrossRefGoogle Scholar
Cameron, M. J.: 1968, Observatory 88, 254.Google Scholar
Kerr, F. J.: 1967, IAU Symposium No. 31, p. 239.Google Scholar
Morgan, W. W.: 1962, Astron. J. 67, 788.Google Scholar
Morgan, W. W. and Osterbrock, D. E.: 1969, Astron. J. 74, 515.CrossRefGoogle Scholar
Sandage, A.: 1961, The Hubble Atlas of Galaxies, Carnegie Institution of Washington, Washington.Google Scholar
Vaucouleurs, G. de: 1958, Rev. Mod. Phys. 30, 926.Google Scholar
Vaucouleurs, G. de: 1959, Handbuch der Physik 53, 275.Google Scholar
Vaucouleurs, G. de: 1963, Astrophys. J. Suppl. Ser. 8, 31.CrossRefGoogle Scholar
Vaucouleurs, G. de: 1964, IAU-URSI Symposium No. 20, pp. 88 and 195.CrossRefGoogle Scholar
Vaucouleurs, G. de: 1966, ‘Nearby Groups of Galaxies’, to be published in Stars and Stellar Systems, 9.Google Scholar
Vaucouleurs, G. and de, A.: 1961, Mem. Roy. Astron. Soc. 68, 69.Google Scholar
Vaucouleurs, G. and de, A.: 1963, Astron. J. 68, 278.CrossRefGoogle Scholar
Vaucouleurs, G. and de, A.: 1964, Reference Catalogue of Bright Galaxies, Univ. Texas Press, Austin.Google Scholar
Vaucouleurs, G. de and Peters, W. L.: 1968, Nature 220, 868.Google Scholar
Vaucouleurs, G. de and Schultz, P.: 1970, ‘Ring Structures in Galaxies as Distance Indicators’, unpublished.CrossRefGoogle Scholar
Vaucouleurs, G. and de, A. and Freeman, K. C.: 1968, Monthly Notices Roy. Astron. Soc. 139, 425.CrossRefGoogle Scholar