Bar-Halo Interaction and Bar Growth

Details Bar-Halo Interaction and Bar Growth Bar-Halo Interaction and Bar Growth

2002-03-21

arxiv.org/abs/astro-ph/0203368v1

Astrophys.J.569:L83-L86,2002

Astronomy and Astrophysics

Astrophysics

10 pages, 2 figures, accepted for ApJ Letters

Scientific paper

10.1086/340784

I show that strong bars can grow in galactic discs, even when the latter are immersed in haloes whose mass within the disc radius is comparable to, or larger than, the mass of the disc. I argue that this is due to the response of the halo and in particular to the destabilising influence of the halo resonant stars. Via this instability mechanism the halo can stimulate, rather than restrain, the growth of the bar.

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