The Evolution of Radio Galaxies at Intermediate Redshift

Details The Evolution of Radio Galaxies at Intermediate Redshift The Evolution of Radio Galaxies at Intermediate Redshift

2001-02-09

arxiv.org/abs/astro-ph/0102176v1

Astronomy and Astrophysics

Astrophysics

26 pages, 9 Figures, Accepted for Publication in AJ

Scientific paper

10.1086/320410

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

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