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    • Ultra steep spectrum radio sources in the Lockman Hole : SERVS identifications and redshift distribution at the faintest radio fluxes 

      Afonso, J.; Bizzocchi, L.; Ibar, E.; Grossi, M.; Simpson, C.; Chapman, S.; Jarvis, M.J.; Rottgering, H.; Norris, R. P.; Dunlop, J.; Ivison, R. J.; Messias, H.; Pforr, J.; Vaccari, M.; Seymour, N.; Best, P.; Gonzalez-Solares, E.; Farrah, D.; Fernandes, C. A. C.; Huang, J. -S.; Lacy, M.; Maraston, C.; Marchetti, L.; Mauduit, J. -C.; Oliver, S.; Rigopoulou, D.; Stanford, S. A.; Surace, J.; Zeimann, G. (2011-12-20)
      Ultra steep spectrum (USS) radio sources have been successfully used to select powerful radio sources at high redshifts (z greater than or similar to 2). Typically restricted to large-sky surveys and relatively bright radio ...