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A classification of galactic collisions for galaxies of unequal dimensions

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Abstract

The earlier work on classification of galactic collisions for identical galaxies is extended to the situations where the two colliding galaxies differ in mass and dimension. We consider collisions between galaxies of masses 107, 109, 1011 and 1013 M ⊙ and let their radii be 0.1, 1, 10 and 100 kpc, respectively. The density distribution in both galaxies is represented by that of a polytrope of indexn=4. The type of collision is determined for head-on collisions for initial relative velocities 500, 1000, 2000 and 3000 km s−1. The corresponding final velocities are also indicated.

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Authors and Affiliations

  1. Centre of Advanced Study in Astronomy, Osmania University, Hyderabad, Andhra Pradesh, India

    K. Shankara Sastry & Saleh Mohamed Alladin

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  1. K. Shankara Sastry
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  2. Saleh Mohamed Alladin
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Sastry, K.S., Alladin, S.M. A classification of galactic collisions for galaxies of unequal dimensions. Astrophys Space Sci 63, 203–208 (1979). https://doi.org/10.1007/BF00647757

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  • DOI: https://doi.org/10.1007/BF00647757

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