Dynamics of the asymmetries at galactic centers

Details Dynamics of the asymmetries at galactic centers Dynamics of the asymmetries at galactic centers

1999-03-02

arxiv.org/abs/astro-ph/9903046v1

"The Central Regions of the Galaxy and Galaxies", IAU Symp. No. 184, ed. Y. Sofue (Kluwer Academic Publishers)

Astronomy and Astrophysics

Astrophysics

2 pages, 3 figures (conference proceedings)

Scientific paper

We propose a new dynamical mechanism to account for the bar off-centering observed in many barred galaxies. It is based on the presence of a m=1 density wave, non-linearly excited by the strong m=2 component due to the linearly unstable bar and by a m=3 mode. N-body simulations suggest that this mechanism is at work in the centers of galaxies, and provide a natural explanation by spontaneously producing bar off-centering which amounts to several tens of parsecs.

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