Cosmology with the Space-Luminosity Distribution of Virialized Halos
نویسندگان
چکیده
We derive the observed luminosity function of virialized systems. Coupling this statistic with the mass function predicted by CDM cosmogonies we obtain the functional behavior of the mass–to–light ratio over a wide dynamical range in mass. We conclude that the mass–to–light ratio has a minimum close to the luminosity of an L∗ galaxy halo. We also show how to derive in a self-consistent way the X-ray–to–optical luminosity ratio for galaxy systems. As a consequence, we predict a fundamental break in the auto-similar scaling behavior of fundamental correlations in going from the group to the cluster scales.
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