Investigation of the luminosity evolution of galaxies and quasars in the standard cosmology model

Details Investigation of the luminosity evolution of galaxies and quasars in the standard cosmology model Investigation of the luminosity evolution of galaxies and quasars in the standard cosmology model

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69..913t&link_type=abstract

Astronomicheskij Zhurnal (ISSN 0004-6299), vol. 69, no. 5, p. 913-925.

Astronomy and Astrophysics

Astronomy

1

Astronomical Models, Galactic Evolution, Luminosity, Quasars, Astronomical Spectroscopy, Statistical Analysis

Scientific paper

It is shown that the Hubble curve, m(z), for galaxies and quasars, averaged on the basis of a large body of data, forms in the first approximation a single continuous curve in the redshift interval 10 exp -2.5 to 4.5, which is satisfactorily described by the dependence m(z) = 5 lg z-8 lg (z+1) + 21.5. A large deviation of the observed mean dependence from the theoretical one, predicted by standard cosmology, is explained by the evolution of the galaxy and especially quasar luminosity. The luminosity of the most distant of the observed quasars is, on average, 6-7 stellar magnitudes greater than that of nearby galaxies and quasars.

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