Efficient satellite quenching at z∼1 from the GEEC2 spectroscopic survey of galaxy groups Academic Article uri icon

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  • We present deep GMOS-S spectroscopy for 11 galaxy groups at 0.866%) for eight of the eleven groups. Using an optical-NIR colour-colour diagram, the galaxies in the sample were separated with a dust insensitive method into three categories: passive (red), star-forming (blue), and intermediate (green). The strongest environmental dependence is observed in the fraction of passive galaxies, which make up only ~20 per cent of the field in the mass range 10^{10.3}


  • Mok, Angus
  • Balogh, Michael L
  • McGee, Sean L
  • Wilman, David J
  • Finoguenov, Alexis
  • Tanaka, Masayuki
  • Giodini, Stefania
  • Bower, Richard G
  • Connelly, Jennifer L
  • Hou, Annie
  • Mulchaey, John S
  • Parker, Laura

publication date

  • May 11, 2013