The Relative Frequency of Compact Extragalactic Objects

  • P. Brosche
Part of the Astrophysics and Space Science Library book series (ASSL, volume 121)


Central regions of galaxies are seen as the product of a random agglomeration of clouds. The resulting distribution of angular momentum is a Maxwellian one. Small angular momentum is a necessary condition for compact cores. For a given mass in virial equilibrium, a small angular momentum means a fast rotation velocity. We assume the broad line width to be caused mainly by rotation.

A relation between the relative frequency and the angular momentum contrast of the central region is given (relative with respect to all galaxies of the same luminosity). The data for Seyfert 1 galaxies are not in conflict with this relation. The application to quasars seems possible.


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Copyright information

© Springer Science+Business Media Dordrecht 1986

Authors and Affiliations

  • P. Brosche
    • 1
  1. 1.Observatorium Hoher ListUniversitäts-Sternwarte BonnDaunF.R. Germany

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