Barred Galaxies: Intrinsic or Extrinsic?

  • M. Noguchi
Conference paper
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 171)


A unified picture is presented of the formation of bar structures in disk galaxies of various morphological types. In order to discuss bar formation in the context of galactic disk formation, a simple analytic model is constructed of the growth of galactic disks by infall of primordial gas from haloes and subsequent star formation in the disks. It is monitored during the course of disk growth whether or not the condition for spontaneous bar formation (i.e., bar instability) is fulfilled for the stellar disk component.

Copyright information

© Springer Science+Business Media Dordrecht 1996

Authors and Affiliations

  • M. Noguchi
    • 1
  1. 1.Astronomical InstituteTohoku UniversityAoba, SendaiJapan

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