The Evolution of Radio Galaxies at Intermediate Redshift

Abstract

We describe a new estimate of the radio galaxy 1.4 GHz luminosity function and its evolution at intermediate redshifts (z~0.4). Photometric redshifts and color selection have been used to select Bj<23.5 early-type galaxies from the Panoramic Deep Fields, a multicolor survey of two 25 sq deg fields. Approximately 230 radio galaxies have then been selected by matching early-type galaxies with NVSS radio sources brighter than 5 mJy. Estimates of the 1.4 GHz luminosity function of radio galaxies measure significant evolution over the observed redshift range. For an Omega_M=1 cosmology the evolution of the radio power is consistent with luminosity evolution where P(z)=P(0)(1+z)^{k_L} and 3<k_L<5. The observed evolution is similar to that observed for UVX and X-ray selected AGN and is consistent with the same physical process being responsible for the optical and radio luminosity evolution of AGN.

26 pages, 9 Figures, Accepted for Publication in AJ

References in corpus (1)

• The Evolution of Radio Galaxies at Intermediate Redshift

Cited by in corpus (23)

• Radio sources in the 6dFGS: Local luminosity functions at 1.4 GHz for star-forming galaxies and radio-loud AGN
• The Evolving Luminosity Function of Red Galaxies
• Radio sources in the 2dF Galaxy Redshift Survey - II. Local radio luminosity functions for AGN and star-forming galaxies at 1.4 GHz
• The VLA-COSMOS 3 GHz Large Project: Evolution of specific star formation rates out to $z\sim 5$
• The Frequency of Active and Quiescent Galaxies with Companions: Implications for the Feeding of the Nucleus
• Evolution of the Radio Loud Galaxy Population
• Radio galaxies in the 2SLAQ Luminous Red Galaxy Survey: I. The evolution of low-power radio galaxies to z~0.7
• GAMA/WiggleZ: The 1.4GHz radio luminosity functions of high- and low-excitation radio galaxies and their redshift evolution to z=0.75
• An updated catalogue of giant radio sources
• Optical and radio properties of extragalactic radio sources with recurrent jet activity
• Galaxy And Mass Assembly (GAMA): The 325 MHz Radio Luminosity Function of AGN and Star Forming Galaxies
• The Environment of Active Galaxies in the SDSS-DR4
• Giant Radio Galaxies - old long-living quasars?
• Optical and radio properties of giant radio quasars: Central black hole characteristics
• The Evolution of Radio Galaxies at Intermediate Redshift
• The Combined NVSS-FIRST Galaxies (CoNFIG) Sample - I. Sample Definition, Classification and Evolution
• Giant radio quasars: sample and basic properties
• Faint, Evolving Radio AGN in SDSS Luminous Red Galaxies
• The Evolution of the Low-Frequency Radio AGN Population to $z\simeq 1.5$ in the ELAIS N1 Field
• The VVDS-VLA Deep Field - IV: Radio-optical properties
• Redshift evolution of the 1.4 GHz volume averaged radio luminosity function in clusters of galaxies
• Constraining Radio Mode Feedback in Galaxy Clusters with the Cluster Radio AGN Properties to z$\sim$1
• EMU/GAMA: A new approach to characterising radio luminosity functions