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Lifetime of density waves and classification of spirals

Published online by Cambridge University Press:  14 August 2015

J. V. Feitzinger  and
Th. Schmidt-Kaler
J. V. Feitzinger
Affiliation:
Astronomisches Institut der Ruhr-Universität Bochum
Th. Schmidt-Kaler
Affiliation:
Astronomisches Institut der Ruhr-Universität Bochum

Extract

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Checking the density-wave theory against observations of our own Galaxy has proven very difficult, as witnessed also at this Symposium. Less ambiguous results, however, are obtained for other galaxies. These results involve a) calculating convincing models for a sample of 25 fairly well observed spirals (Roberts et al. 1975) and b) locating the compression zones on the inner edges of the spiral arms.

Type
III. SPIRAL STRUCTURE
Information
Symposium - International Astronomical Union , Volume 84: The Large-Scale Characteristics of the Galaxy , 1979 , pp. 155 - 156
Copyright
Copyright © Reidel 1979 

References

Roberts, W. W., Roberts, M.S., and Shu, F.H.: 1975, Astrophys. J. 196, 391.Google Scholar
van der Kruit, P. C.: 1973, Astrn. Astrophys. 29, 263.Google Scholar