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Title:
Further Evidence That the Redshifts of AGN Galaxies May Contain Intrinsic Components
Authors:
Bell, M. B.
Affiliation:
AA(Herzberg Institute of Astrophysics, National Research Council of Canada, 100 Sussex Drive, Ottawa, ON K1A 0R6, Canada; .)
Publication:
The Astrophysical Journal, Volume 667, Issue 2, pp. L129-L132. (ApJL Homepage)
Publication Date:
10/2007
Origin:
UCP
ApJ Keywords:
Galaxies: Active, Galaxies: Distances and Redshifts, Galaxies: Quasars: General
DOI:
10.1086/522337
Bibliographic Code:
2007ApJ...667L.129B

Abstract

In the decreasing intrinsic redshift (DIR) model galaxies are assumed to be born as compact objects that have been ejected with large intrinsic redshift components, zi, out of the nuclei of mature AGN galaxies. As young AGN galaxies (quasars) they are initially several magnitudes subluminous to mature galaxies but their luminosity gradually increases over 108 yr, as zi decreases and they evolve into mature AGN galaxies (BL Lac objects, Seyferts, and radio galaxies). Evidence presented here that on a logz-mv plot the bright edge of the AGN galaxy distribution at z=0.1 is unquestionably several magnitudes subluminous to the brightest radio galaxies is then strong support for this model and makes it likely that the high-redshift AGN galaxies (quasars) are also subluminous, having simply been pushed above the radio galaxies on a logz-mv plot by the presence of a large intrinsic component in their redshifts. An increase in luminosity below z=0.06 is also seen. It is associated in the DIR model with an increase in luminosity as the sources mature but, if real, is difficult to interpret in the cosmological redshift (CR) model since at this low redshift it is unlikely to be associated with a higher star formation rate or an increase in the material used to build galaxies. Whether it might be possible in the CR model to explain these results by selection effects is also examined.
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