Galaxy Harassment and the Evolution of Clusters of Galaxies

Details Galaxy Harassment and the Evolution of Clusters of Galaxies Galaxy Harassment and the Evolution of Clusters of Galaxies

1995-10-06

arxiv.org/abs/astro-ph/9510034v1

Nature 379 (1996) 613

Astronomy and Astrophysics

Astrophysics

Submitted to Nature. Latex file, 7 pages, 10 photographs in gif and jpeg format included. 10 compressed postscript figures and

Scientific paper

10.1038/379613a0

Disturbed spiral galaxies with high rates of star formation pervaded clusters of galaxies just a few billion years ago, but nearby clusters exclude spirals in favor of ellipticals. ``Galaxy harassment" (frequent high speed galaxy encounters) drives the morphological transformation of galaxies in clusters, provides fuel for quasars in subluminous hosts and leaves detectable debris arcs. Simulated images of harassed galaxies are strikingly similar to the distorted spirals in clusters at $z \sim 0.4$ observed by the Hubble Space Telescope.

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