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Gas Flows and Bars in Galaxies

  • Françoise Combes
Part of the Astrophysics and Space Science Proceedings book series (ASSSP)

Dynamical evolution of spiral galaxies is strongly dependent on nonaxisymmetric patterns that develop from gravitational instabilities, either spontaneously or externally triggered. Some evolutionary sequences are described through which a galaxy could possibly concentrate mass and build bulges, how external gas accretion from cosmic filaments could be funneled to the galaxy disks, and intermittently driven to the galaxy center, to form nuclear starbursts and fuel an active nucleus. The frequency of both bars and lopsidedness can be used to constrain the gas accretion rate.

Keywords

Dark Matter Star Formation Spiral Galaxy Gravitational Instability Galaxy Disk 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Françoise Combes
    • 1
  1. 1.Observatoire de ParisLERMAFrance

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