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Non-Uniformities in the Hubble Flow: Results from a Survey of Elliptical Galaxies

Published online by Cambridge University Press:  19 July 2016

Roger L. Davies ,
David Burstein ,
Alan Dressler ,
S. M. Faber ,
Donald Lynden-Bell ,
Roberto Terlevich  and
Gary Wegner
Roger L. Davies
Affiliation:
Kitt Peak National Observatory, NOAO
David Burstein
Affiliation:
Dept. of Physics, Arizona State University
Alan Dressler
Affiliation:
Mt. Wilson and Las Campanas Observatories
S. M. Faber
Affiliation:
Lick Observatory, U. C. Santa Cruz
Donald Lynden-Bell
Affiliation:
Institute of Astronomy, Cambridge, England
Roberto Terlevich
Affiliation:
Royal Greenwich Observatory, Sussex, England
Gary Wegner
Affiliation:
Dept. of Physics and Astronomy, Dartmouth College

Abstract

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We have used a new distance estimator for elliptical galaxies to determine the peculiar velocities, with respect to a uniform Hubble flow, of approximately 400 galaxies. The relative distances of five clusters in common with those of Aaronson et al. (1981, 1986), based on the infrared Tully-Fisher relation for spirals, are in good agreement.

We do not see the reflex of the Local Group motion with respect to the microwave background out to recession velocities of 6000 km s−1. Rather, the frame of elliptical galaxies appears to be moving with respect to the microwave background with a velocity of 600 km s−1 towards 1 = 312°, b = +6°. This motion is consistent with a re-analysis of the Rubin et al. (1976) data on the magnitude-diameter relation for ScI galaxies and with the nearby and cluster samples of Aaronson et al. (1982, 1986).

Type
Chapter III. The Classical Quantities of Cosmology
Information
Symposium - International Astronomical Union , Volume 124: Observational Cosmology , 1987 , pp. 223 - 227
Copyright
Copyright © Reidel 1987 

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