Group Identification in N-Body Simulations: SKID and DENMAX Versus Friends-of-Friends

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dc.creatorGoetz, M.
dc.creatorHuchra, J. P.
dc.creatorBrandenberger, R. H.
dc.date1998-11-24
dc.date.accessioned2026-07-07T02:29:16Z
dc.date.available2026-07-07T02:29:16Z
dc.descriptionThree popular algorithms (FOF, DENMAX, and SKID) to identify halos in cosmological N-body simulations are compared with each other and with the predicted mass function from Press-Schechter theory. It is shown that the resulting distribution of halo masses strongly depends upon the choice of free parameters in the three algorithms, and therefore much care in their choice is needed. For many parameter values, DENMAX and SKID have the tendency to include in the halos particles at large distances from the halo center with low peculiar velocities. FOF does not suffer from this problem, and its mass distribution furthermore is reproduced well by the prediction from Press-Schechter theory.
dc.description15 pages, 8 figures, uses epsf.sty and LaTeX2e. Submitted to ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/9811393
dc.identifierhttp://arxiv.org/abs/astro-ph/9811393
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/13407
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleGroup Identification in N-Body Simulations: SKID and DENMAX Versus Friends-of-Friends
dc.typetext

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