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Numerical Simulations of Star Formation Bursts Induced by the Galaxy-Galaxy Interaction

Published online by Cambridge University Press:  04 August 2017

Masafumi Noguchi  and
Shiro Ishibashi
Masafumi Noguchi
Affiliation:
Tokyo Astronomical Observatory, Mitaka, Tokyo 181, Japan
Shiro Ishibashi
Affiliation:
Department of Astronomy, University of Tokyo, Tokyo 113, Japan

Extract

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The galaxy-galaxy interaction has been proposed as a possible triggering mechanism of the star formation bursts in some galaxies (e.g. Larson and Tinsley 1978). To investigate the nature of star formation bursts triggered by interaction we have numerically simulated close encounters between disk galaxies, taking the star formation process into account (see Noguchi and Ishibashi 1986 for details). We used the cloud-particle model, in which gas clouds move as test particles in the gravitational field of the galaxies. When two clouds collide with each other, an OB-star is formed. The cloud system loses its kinetic energy by inelastic cloud-cloud collisions. The supernova explosion which follows the formation of an OB-star provides kinetic energy to the nearby clouds.

Type
II. Large Scale Processes of Star Formation
Information
Symposium - International Astronomical Union , Volume 115: Star Forming Regions , 1987 , pp. 650 - 653
Copyright
Copyright © Reidel 1987 

References

Larson, R.B. and Tinsley, B.M.: 1978, Astrophys. J. 219, 46.Google Scholar
Noguchi, M. and Ishibashi, S.: 1986, Monthly Notices Roy. Astron. Soc. 218 (in press).Google Scholar