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Evolution of Clustering and Bias in a Lambda-CDM Universe

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arxiv astro-ph/9910221 v1 pith:2LRWOCHX submitted 1999-10-12 astro-ph

Evolution of Clustering and Bias in a Lambda-CDM Universe

classification astro-ph
keywords biasmasscorrelationevolutionfunctiongalaxiesgalaxylittle
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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