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Streaming Motions in the Local Universe

Published online by Cambridge University Press:  30 March 2016

Ofer Lahav
Ofer Lahav*
Affiliation:
Institute of AstronomyMadingley Road Cambridge, CB3 OHA. England

Abstract

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Deviations from the Hubble flow directly probe of the underlying total mass distribution, assuming the gravitational instability picture. We discuss the origin of motion of the Local Group with respect to the Cosmic Background Radiation and review the peculiar velocity field deduced from distances to hundreds of elliptical and spiral galaxies, including new results for the Shapley Supercluster. Bulk-flow solutions which are free of Malmquistbias are presented, indicating coherence length larger than that expected from the optical and IRAS dipoles or from Cold Dark Matter models.

Type
Joint Commission Meetings
Information
Highlights of Astronomy , Volume 9: Highlights of Astronomy. As presented at the XXIst General Assembly of the IAU, 1991 , 1992 , pp. 687 - 691
Copyright
Copyright © Kluwer 1992

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