Ultra-Steep Spectrum Radio Galaxies at Hy Redshifts
Wil van Breugel, Carlos De Breuck, Adam Stanford, Huub Röttgering, George Miley, Daniel Stern, Dante Minniti, Chris Carilli
Abstract
Radio sources have traditionally provided convenient beacons for probing the early Universe. Hy Spinrad was among the first of the tenacious breed of observers who would attempt to obtain optical identifications and spectra of the faintest possible `radio galaxies' to investigate the formation and evolution of galaxies at hy redshift. Modern telescopes and instruments have made these tasks much simpler, although not easy, and here we summarize the current status of our hunts for hy redshift radio galaxies (HyZRGs) using radio spectral and near-IR selection.
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