The quasar luminosity function from a variability-selected sample

Details The quasar luminosity function from a variability-selected sample The quasar luminosity function from a variability-selected sample

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.260..202h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 260, no. 1, p. 202-208.

Astronomy and Astrophysics

Astronomy

59

Cosmology, Galactic Evolution, Luminosity, Quasars, Variability, Astronomical Photometry, Red Shift, Schmidt Telescopes

Scientific paper

A sample of quasars is selected from a 10-yr sequence of 30 UK Schmidt plates. Luminosity functions are derived in several redshift intervals, which in each case show a featureless power-law rise towards low luminosities. There is no sign of the 'break' found in the recent UVX sample of Boyle et al. It is suggested that reasons for the disagreement are connected with biases in the selection of the UVX sample. The question of the nature of quasar evolution appears to be still unresolved.

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