High-redshift radio galaxies: the most massive galaxies at every epoch

Carlos De Breuck
2006 Proceedings of the International Astronomical Union  
Radio galaxies are identified with the most massive host galaxies known out to z = 5 and can put strong constraints on galaxy evolution models, provided their space density is accurately determined. Here, I present the important role low-frequency radio surveys will have in this by selecting the highest redshift radio galaxies using the steepness of their radio spectra.
doi:10.1017/s174392130701109x fatcat:neqqv6hycjelbm47klyo27skwa