Bulk-flow and beta_I from the SMAC project

Details Bulk-flow and beta_I from the SMAC project Bulk-flow and beta_I from the SMAC project

1999-09-17

arxiv.org/abs/astro-ph/9909305v1

Astronomy and Astrophysics

Astrophysics

7 pages, 3 figures. To appear in Proceedings of the Cosmic Flows Workshop, Victoria, B. C., Canada, July 1999, eds. S. Courtea

Scientific paper

The SMAC project is a Fundamental Plane peculiar velocity survey of 56 clusters of galaxies to a depth of cz ~ 12000 km/s. We present here some results from the analysis of the SMAC velocity field, focussing on three specific features: the best-fitting bulk-flow model for the SMAC data; the agreement between the observed velocity field and predictions from the IRAS-PSCz redshift survey; the role of the Great Attractor and Shapley Concentration in generating the local flows. We argue that the local mass distribution, as probed by the PSCz, can fully account for the observed cluster velocities.

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