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Bias in Velocity Field Recoveries

1993/10/04 by Andrew Newsam, Newsam, Andrew, John F. L. Simmons +3
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/9310008

10 pages including 5 figures, uuencoded compressed PostScript, for Cosmic Velocity Fields, IAP Paris July 1993. UG-COS-AMN-001

arxiv created 1993/10/04 · arxiv updated 2009/12/01

Abstract

We investigate the effect of using different distance estimators on the recovery of the peculiar velocity field of galaxies using Potent. An inappropriate choice of distance estimator will give rise to spurious flows. We discuss methods of minimising these biases and the levels of accuracy required of distance estimators to retrieve velocity fields to a given standard.

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