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Theoretical considerations of the warp and thickening

Published online by Cambridge University Press:  14 August 2015

E. Saar
E. Saar*
Affiliation:
Tartu Astrophysical Observatory

Extract

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As a theoretical subject, the study of the bending of the gaseous planes of galaxies has not been extremely popular. It seems that this is due to an excellent and thorough paper on the subject, published by Hunter and Toomre in 1969. At that time there existed three (or four) rival theoretical mechanisms:

  1. (1) vertical oscillations of the galactic disk, considered first by Lynden-Bell (1965);

  2. (2) asymmetrical pressure on the disk due to intergalactic wind (Kahn and Woltjer 1959);

  3. (3) tidal influence of the Magellanic Clouds, from

    1. (a) the case of Stationary Clouds, and

    2. (b) the case of Clouds orbiting around the Galaxy (Elwert and Hablick 1965, Avner and King 1967).

Type
IX. THE GALACTIC WARP
Information
Symposium - International Astronomical Union , Volume 84: The Large-Scale Characteristics of the Galaxy , 1979 , pp. 513 - 522
Copyright
Copyright © Reidel 1979 

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