Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-26T04:09:03.990Z Has data issue: false hasContentIssue false
  • English
  • Français

Dynamical Friction in Barred Galaxies

Published online by Cambridge University Press:  12 April 2016

Victor P. Debattista  and
J. A. Sellwood
Victor P. Debattista
Affiliation:
Rutgers University, PO Box 849, Piscataway, NJ 08855
J. A. Sellwood
Affiliation:
Rutgers University, PO Box 849, Piscataway, NJ 08855

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Weinberg’s (1985) perturbative calculation of the dynamical friction by halos on bars predicts that bars will be slowed down very quickly. Previous numerical experiments (e.g. Hernquist & Weinberg 1992) have obtained results that are in agreement with Weinberg’s calculation.

Observations, however, suggest that most bars are rotating rapidly. (In this context, a bar is slow if the major axis Lagrange point is far outside the bar, while a fast bar ends at, or near, this Lagrange point.) Neither Weinberg’s calculation nor the numerical experiments have, to the present date, been fully self-consistent, so possibly important effects such as resonance capture and the back reaction on the bar were not included.

Type
Posters of Part V and Part VI
Information
International Astronomical Union Colloquium , Volume 157: Barred Galaxies , 1996 , pp. 357 - 359
Copyright
Copyright © Astronomical Society of the Pacific 1996

References

Hernquist, L. & Weinberg, M. 1992 ApJ, 400, 80 Google Scholar
Kormendy, J. 1979, ApJ, 227, 714 Google Scholar
Weinberg, M. 1985, MNRAS, 213, 451 CrossRefGoogle Scholar