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Dynamical Experiments on Models of Colliding Disk Galaxies

  • Richard A. Gerber (a1), Dinshaw S. Balsara (a2) and Susan A. Lamb (a1) (a2)

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Collisions between galaxies can induce large morphological changes in the participants and, in the case of colliding disk galaxies, bridges and tails are often formed. Observations of such systems indicate a wide variation in color (see Larson and Tinsley, 1978) and that some of the participants are experiencing enhanced rates of star formation, especially in their central regions (Bushouse 1986, 1987; Kennicutt et al., 1987, Bushouse, Lamb, and Werner, 1988). In this paper we describe progress we have made in understanding some of the dynamics of interacting galaxies using N-body stellar dynamical computer experiments, with the goal of extending these models to include a hydrodynamical treatment of the gas so that a better understanding of globally enhanced star formation will eventually be forthcoming.

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Copyright

References

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Balsara, D.S. and Norman, M.L. 1990, Submitted to Ap. J.
Bushouse, H.A. 1986, Astron. J., 91 255.
Bushouse, H.A. 1987, Ap. J., 320 49.
Bushouse, H.A., Lamb, S.A., and Werner, M.W., 1988, Ap. J., 325 74.
Kennicutt, R.C., Keel, W.C., van der Hulst, J.M., Hummell, E. and Roettiger, K. 1987, Astron. J., 93, 1011.
King, I.E. 1966, Astron. J., 71 64.
Larson, R.B. and Tinsley, B.M. 1978, Ap. J., 219 46.
Miller, R.H. and Smith, B.F. 1980, Ap. J., 223 122.
Noguchi, M. 1987, Mon. Not. R. astr. Soc, 228 635.

Dynamical Experiments on Models of Colliding Disk Galaxies

  • Richard A. Gerber (a1), Dinshaw S. Balsara (a2) and Susan A. Lamb (a1) (a2)

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