The Evolution of Galaxies in X-Ray-luminous Groups

@article{Jeltema2007TheEO,
  title={The Evolution of Galaxies in X-Ray-luminous Groups},
  author={Tesla E. Jeltema and John S Mulchaey and Lori M. Lubin and Christopher D. Fassnacht},
  journal={The Astrophysical Journal},
  year={2007},
  volume={658},
  pages={865-883}
}
We investigate the galaxy populations in seven X-ray-selected, intermediate-redshift groups (0.2 < z < 0.6). Overall, the galaxy populations in these systems are similar to those in clusters at the same redshift; they have large fractions of early-type galaxies (fe ~ 70%) and small fractions of galaxies with significant star formation (f[O II] ~ 30%). We do not observe a strong evolution in the galaxy populations from those seen in X-ray-luminous groups at low redshift. Both fe and f[O II] are… Expand

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