Paper:	Halo Pairs in the Millennium Simulation: Love and Deception
Volume:	477, Galaxy Mergers in an Evolving Universe
Page:	111
Authors:	Moreno, J.
Abstract:	In this work I investigate the statistical properties of a huge catalog of closely interacting pairs of dark matter haloes, extracted from the Millennium Simulation database. Only haloes that reach a minimum mass ≥ 8.6 × 1010 M☉ h–1 (corresponding to 100 particles) are considered. Close pairs are selected if they come within a critical distance dcrit. I explore the effects of replacing dcrit = 1 Mpc h–1 → 200 kpc h–1 on the evolution of separations, lifetimes, total masses and mass ratios of these pairs.

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