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The Redshift-Magnitude Relation for Radio Galaxies

Published online by Cambridge University Press:  14 August 2015

Harding E. Smith
Harding E. Smith*
Affiliation:
Department of Physics, University of California, San Diego

Abstract

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We examine the Hubble diagram for radio galaxies and compare radio galaxies and first-ranked cluster galaxies as cosmological test objects. Radio source identification programs are now producing reliable identifications with galaxies as faint as V ≈ 23 and spectroscopy of these objects has already resulted in the discovery of galaxies with redshifts as high as 0.75, thus there are great expectations for progress in the near future. As in the past, indeterminate corrections, notably luminosity evolution and a possible correlation between radio power and optical luminosity, preclude the determination of qo.

Type
V. Interpretation of Cosmological Information on Radio Sources
Information
Symposium - International Astronomical Union , Volume 74: Radio Astronomy and Cosmology , 1977 , pp. 279 - 293
Copyright
Copyright © Reidel 1977 

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