Discrete spiral modes in disk galaxies: Some numerical examples based on density wave theory
- 1 November 1977
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 74 (11) , 4726-4729
- https://doi.org/10.1073/pnas.74.11.4726
Abstract
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.Keywords
This publication has 2 references indexed in Scilit:
- Unstable spiral modes in disk-shaped galaxies: Enhancement of growth rateProceedings of the National Academy of Sciences, 1976
- Unstable spiral modes in disk-shaped galaxiesProceedings of the National Academy of Sciences, 1976