Journal Article

The UVX quasar optical luminosity function and its evolution

Pippa Goldschmidt and Lance Miller

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 293, issue 1, pages 107-112
Published in print January 1998 | ISSN: 0035-8711
Published online January 1998 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1046/j.1365-8711.1998.01131.x
The UVX quasar optical luminosity function and its evolution

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Abstract

The recently finished Edinburgh UVX quasar survey at B<18 is used together with other complete samples to estimate the shape and evolution of the optical luminosity function in the redshift range 0.3<z<2.2. There is a significantly higher space density of quasars at high luminosity and low redshift than previously found in the PG sample of Schmidt & Green, with the result that the shape of the luminosity function at low redshifts (z<1) is seen to be consistent with a single power law. At higher redshifts the slope of the power law at high luminosities appears to steepen significantly. There does not appear to be any consistent break feature which could be used as a tracer of luminosity evolution in the population.

Keywords: galaxies: evolution; galaxies: luminosity function, mass function; quasars: general; cosmology: miscellaneous

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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