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The Parkes quarter-Jansky flat-spectrum sample - III. Space density and evolution of QSOs

Wall, Jasper V; Jackson, Carole; Shaver, P A; Hook, I M; Kellermann, K I


We analyze the Parkes quarter-Jansky flat-spectrum sample of QSOs in terms of space density, including the redshift distribution, the radio luminosity function, and the evidence for a redshift cutoff. With regard to the luminosity function, we note the strong evolution in space density from the present day to epochs corresponding to redshifts ∼1. We draw attention to a selection effect due to spread in spectral shape that may have misled other investigators to consider the apparent similarities...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361:20041786


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