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

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

1998-11-24

arxiv.org/abs/astro-ph/9811393v1

Astronomy and Astrophysics

Astrophysics

15 pages, 8 figures, uses epsf.sty and LaTeX2e. Submitted to ApJ

Scientific paper

Three 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.

Affiliated with

Also associated with

No associations

Rating

Group Identification in N-Body Simulations: SKID and DENMAX Versus Friends-of-Friends does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Group Identification in N-Body Simulations: SKID and DENMAX Versus Friends-of-Friends, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Group Identification in N-Body Simulations: SKID and DENMAX Versus Friends-of-Friends will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-458519