Cluster Distances: the Good, the Bad and the Ugly

Details Cluster Distances: the Good, the Bad and the Ugly Cluster Distances: the Good, the Bad and the Ugly

1999-09-17

arxiv.org/abs/astro-ph/9909309v1

Astronomy and Astrophysics

Astrophysics

7 pages, 12 figures. To appear in Proceedings of the Cosmic Flows Workshop, Victoria, B. C., Canada, July 1999, eds. S. Courte

Scientific paper

Galaxy clusters are important targets for peculiar velocity studies as a direct comparison of the various distance indicators can be made. The potential problem of an environmental effect biasing the distances to clusters of different richness is examined. The level of intrinsic cluster-to-cluster variations is also reviewed. We investigate the claim that the derived Fundamental Plane (FP) distances vary systematically with FP scatter. The cluster distances and peculiar velocities derived from Tully-Fisher, FP and Brightest Cluster Galaxies are compared and we find good agreement.

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