Cluster galaxies: contribution to the arc statistics

Details Cluster galaxies: contribution to the arc statistics Cluster galaxies: contribution to the arc statistics

2000-08-30

arxiv.org/abs/astro-ph/0008483v1

Astronomy and Astrophysics

Astrophysics

4 pages, Latex using moriond2000.sty. To be published in Proc. of the XXXVth Rencontres de Moriond--XXth Moriond Astrophysics

Scientific paper

We present the results of a set of numerical simulations aiming at evaluating the effects of cluster galaxies on the arc statistics. At this goal we use nine different galaxy clusters obtained from N-body simulations. We mimic the presence of a population of galaxies inside each cluster, trying to reproduce the observed luminosity function and the spatial distribution. We compare the statistical distributions of the properties of the gravitational arcs produced by our clusters with and without galaxies. We find that the cluster galaxies do not introduce perturbations strong enough to significantly change the number of arcs and the distributions of the properties of long arcs.

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