Clusters and groups of galaxies in the simulated local universe

  title={Clusters and groups of galaxies in the simulated local universe},
  author={Luca Casagrande and Antonaldo Diaferio},
  journal={Monthly Notices of the Royal Astronomical Society},
We compare the properties of galaxy groups extracted from the Updated Zwicky Catalogue (UZC) with those of groups extracted from N-body simulations of the local Universe, in a A cold dark matter (CDM) and a rCDM cosmology. In the simulations, the initial conditions of the dark matter density field are set to reproduce the present time distribution of the galaxies within 80 h -1 Mpc from the Milky Way. These initial conditions minimize the uncertainty originated by cosmic variance, which has… 
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