The Bar-Halo Interaction in SB Galaxies

Details The Bar-Halo Interaction in SB Galaxies The Bar-Halo Interaction in SB Galaxies

1996-10-01

arxiv.org/abs/astro-ph/9610009v1

Astronomy and Astrophysics

Astrophysics

8 pages, paspconf style, 4 Postscript figures. To appear in the proceedings of the Dark Matter 1996 conference, Sesto, Italy

Scientific paper

We describe fully self-consistent N-body experiments of barred galaxies with massive halos. A rotating bar is braked through dynamical friction with the halo, which occurs on a short time scale when the central density of the halo is high. On the other hand, friction is weak in a model with a central halo density low enough that the disk dominates the rotation curve in the inner parts; this model supports a fast bar for a Hubble time. We conclude that real barred galaxies in which the bar rotates rapidly, which is believed to be the rule, must have close to maximum disks.

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