Angular Momentum Redistribution and the Evolution and Morphology of Bars

  • Lia Athanassoula
Part of the Lecture Notes in Physics book series (LNP, volume 626)


Angular momentum exchange is a driving process for the evolution of barred galaxies. Material at resonance in the bar region loses angular momentum which is taken by material at resonance in the outer disc and/or the halo. By losing angular momentum, the bar grows stronger and slows down. This evolution scenario is backed by both analytical calculations and by N-body simulations. The morphology of the bar also depends on the amount of angular momentum exchanged.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Lia Athanassoula
    • 1
  1. 1.Observatoire de MarseilleMarseille cedex 04France

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