Evolution of Clustering and Bias in a Lambda-CDM Universe

Details Evolution of Clustering and Bias in a Lambda-CDM Universe Evolution of Clustering and Bias in a Lambda-CDM Universe

1999-10-12

arxiv.org/abs/astro-ph/9910221v1

Astronomy and Astrophysics

Astrophysics

2 pages, contribution to the Proceedings of Rencontres Internationales de l'IGRAP, Clustering at High Redshift, Marseille 1999

Scientific paper

We determine the evolution from $z=3\to 0$ of the galaxy and mass correlation functions and bias factor in a $50h^{-1}$Mpc $\Lambda$CDM hydrodynamic simulation with $10h^{-1}$kpc resolution. The mass correlation function grows with time, but the galaxy correlation function shows little evolution and is well described by a power law. At early times, galaxies are biased traces of mass, with bias being higher on smaller scales. By z=0, galaxies trace the mass, and the bias shows little scale dependence.

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