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Bar Destruction Mechanism by External Interactions

Published online by Cambridge University Press:  12 April 2016

M. T. Nishida  and
K. Wakamatsu
M. T. Nishida
Affiliation:
Kobe Women’s University, Japan
K. Wakamatsu
Affiliation:
Physics Department, Gifu University, Japan

Abstract

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To investigate bar destruction by a vertical head-on galaxy encounter, the dynamical evolution after the instantaneous momentum change of the impulsive approximation of a vertical head-on galaxy encounter, and the instability of finite amplitude one-armed perturbations to barred structure, are investigated by 2-dimensional N-body simulations.

Preliminary results show that off-center vertical head-on collisions induce bar destruction but collisions in which the colliding galaxy passes through the very center of the target galaxy do not induce bar destruction.

Type
Posters of Part V and Part VI
Information
International Astronomical Union Colloquium , Volume 157: Barred Galaxies , 1996 , pp. 366 - 368
Copyright
Copyright © Astronomical Society of the Pacific 1996

References

Gerin, A., Combes, F., & Athanassoula, E. 1990, A&A, 230, 37 Google Scholar
Noguchi, M. 1987, MNRAS, 228, 635 Google Scholar