Discrete Spiral Modes in Disk Galaxies: Some Numerical Examples Based on Density Wave Theory

Details Discrete Spiral Modes in Disk Galaxies: Some Numerical Examples Based on Density Wave Theory Discrete Spiral Modes in Disk Galaxies: Some Numerical Examples Based on Density Wave Theory

Nov 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977pnas...74.4726b&link_type=abstract

Proceedings of the National Academy of Sciences of the United States of America, Volume 74, Issue 11, pp. 4726-4729

Physics

25

Scientific paper

Discrete growing spiral modes are calculated, on the basis of principles of stellar dynamics, according to the recently developed asymptotic theory of density waves for spiral structure in galaxies. From the growth rates obtained, it appears likely that several spiral modes coexist in a given disk galaxy. General properties of these modes are described for two galaxy models, and some of their important observational implications are discussed.

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