Bar-Halo Interaction and Bar Growth

Abstract

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.

10 pages, 2 figures, accepted for ApJ Letters

References in corpus (2)

• Dynamics of Barred Galaxies
• Morphology, photometry and kinematics of N-body bars. I Three models with different halo central concentrations

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