Mock observations with the Millennium Simulation: cosmological downsizing and intermediate-redshift observations
Only by incorporating various forms of feedback can theories of galaxy formation reproduce the present-day luminosity function of galaxies. It has also been argued that such feedback processes might explain the counterintuitive behaviour of `downsizing' witnessed since redshifts z ~= 1-2. To examine this question, observations spanning 0.4 z 1.4
Stringer, M. J. et al.
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2009