Observational Evidence for the Coevolution of Galaxy Mergers, Quasars, and the Blue/Red Galaxy Transition

@article{Hopkins2007ObservationalEF,
  title={Observational Evidence for the Coevolution of Galaxy Mergers, Quasars, and the Blue/Red Galaxy Transition},
  author={Philip F. Hopkins and Kevin Bundy and Lars Hernquist and Richard S. Ellis HarvardCfA and Caltech},
  journal={The Astrophysical Journal},
  year={2007},
  volume={659},
  pages={976-996}
}
We compile a number of observations to estimate the time-averaged rate of formation or buildup of red sequence galaxies, as a function of mass and redshift. Comparing this with the mass functions of mergers and quasar hosts, and independently comparing their clustering properties as a function of redshift, we find that these populations trace the same mass distribution, with similar evolution, at redshifts 0 < z ≾ 1.5. Knowing one of the quasar, merger, or elliptical mass/luminosity functions… 

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