NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-24 T14:38:06 PDT
Help | Comment | NED Home

For refcode 2008ApJ...674..111C:
Retrieve 133 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2008ApJ...674..111C MOJAVE: Monitoring of Jets in AGN with VLBA Experiments. IV. The Parent Luminosity Function of Radio-Loud Blazars Cara, M.; Lister, M. L. Abstract. We use a complete sample of active galactic nuclei (AGN) selected on the basis of relativistically beamed 15 GHz radio flux density (MOJAVE: Monitoring of Jets in AGN with VLBA Experiments) to derive the parent radio luminosity function (RLF) of bright radio-selected blazar cores. We use a maximum likelihood method to fit a beamed RLF to the observed data and thereby recover the parameters of the intrinsic (unbeamed) RLF. We analyze two subsamples of the MOJAVE sample: the first contains only objects of known FR II class, with a total of 103 sources, and the second subsample adds 24 objects of uncertain FR class for a total of 127 sources. Both subsamples exclude four known FR I radio galaxies and two gigahertz-peaked spectrum sources. We obtain good fits to both subsamples using a single power law intrinsic RLF and a pure density evolution function of the form z^m^exp-1/2[(z-z_0_)/{sigma}^2^. We find that a previously reported break in the observed MOJAVE RLF actually arises from using incomplete bins (because of the luminosity cutoff) across a steep and strongly evolving RLF, and does not reflect a break in the intrinsic RLF. The derived space density of the parent population of the FR II sources from the MOJAVE sample (with L_15GHz_>=1.3x10^25^ W Hz^-1^) is approximately 1.6x10^3^ Gpc^-3^. Key words: Galaxies: BL Lacertae Objects: General, Galaxies: Active, Galaxies: Evolution, Galaxies: Luminosity Function, Mass Function, Galaxies: Quasars: General
Retrieve 133 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home