A model for multiproperty galaxy cluster statistics

  title={A model for multiproperty galaxy cluster statistics},
  author={August E. Evrard and Pablo Arnault and Dragan Huterer and Arya Farahi},
  • August E. Evrard, Pablo Arnault, +1 author Arya Farahi
  • Published 2014
  • Physics
  • The massive dark matter halos that host groups and clusters of galaxies have observable properties that appear to be log-normally distributed about power-law mean scaling relations in halo mass. Coupling this assumption with either quadratic or cubic approximations to the mass function in log space, we derive closed-form expressions for the space density of halos as a function of multiple observables as well as forms for the low-order moments of properties of observable-selected samples. Using… CONTINUE READING

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