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The Spiral Structure of M31

Published online by Cambridge University Press:  14 August 2015

E. Athanassoula
E. Athanassoula*
Affiliation:
E.S.O., Geneva, Switzerland and Observatoire de Lyon

Extract

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The H I, H II, and OB-association densities, as a function of radius, have the same structure, reminding one of a ring with a maximum at r ≃ 50′.

Type
III: Nearby Galaxies of Large Angular Size
Information
Symposium - International Astronomical Union , Volume 77: Structure and Properties of Nearby Galaxies , 1978 , pp. 163 - 167
Copyright
Copyright © Reidel 1978 

References

Athanassoula, E. 1977, Preprint.Google Scholar
Baade, W. and Arp, H. 1964, Astrophys. J. 139, 1027.Google Scholar
Bergh, S. van den 1964, Astrophys. J. Suppl. 9, 65.Google Scholar
Emerson, D.T. 1976, Monthly Notices Roy. Astron. Soc. 176, 321.Google Scholar
Kalnajs, A.J. 1975, in Weliachew, (ed.), La Dynamique des Galaxies Spirales, 103.Google Scholar