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Spiral Instabilities and Disc Heating
Published online by Cambridge University Press: 04 August 2017
Extract
Many simulations of disc galaxies exhibit a succession of transient spiral patterns when sufficient halo is included to suppress the global bar instability (Hohl 1970, Hockney and Brownrigg 1974, Sellwood and James 1979). This behaviour causes the velocity dispersion to rise secularly which in turn reduces the intensity of the patterns. Spiral activity usually ceases altogether as Q tends asymptotically to a value somewhat greater than 2.
- Type
- II. Spiral Structure
- Information
- Symposium - International Astronomical Union , Volume 100: Internal Kinematics and Dynamics of Galaxies , 1983 , pp. 127 - 128
- Copyright
- Copyright © Reidel 1983
References
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