A Comparison of Simulated and Analytic Major Merger Counts

Details A Comparison of Simulated and Analytic Major Merger Counts A Comparison of Simulated and Analytic Major Merger Counts

2000-09-23

arxiv.org/abs/astro-ph/0009381v2

Mon.Not.Roy.Astron.Soc.325:1053,2001

Astronomy and Astrophysics

Astrophysics

24 pages, 18 figures. Comments welcome. Final version to appear MNRAS, helpful suggestions from referee and others incorporate

Scientific paper

10.1046/j.1365-8711.2001.04509.x

We use large volume, high resolution, N-body simulations of 3 different $\Lambda$CDM models, with different clustering strengths, to generate dark matter halo merging histories. Over the reliable range of halo masses, roughly galaxy groups to rich clusters of galaxies, we quantify the number density of major mergers for two different time intervals and compare with analytic predictions based on the extended Press-Schechter (1974) theory.

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