Angular momentum redistribution and the evolution and morphology of bars

Details Angular momentum redistribution and the evolution and morphology of bars Angular momentum redistribution and the evolution and morphology of bars

2003-02-25

arxiv.org/abs/astro-ph/0302521v1

Astronomy and Astrophysics

Astrophysics

14 pages, 6 figures, invited talk to appear in "Galaxies and Chaos", G. Contopoulos & N. Voglis (eds.), Lecture Notes in Physi

Scientific paper

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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