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Projection Effects in the Abell Catalogue

M. P. van Haarlem
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Abstract

We investigate the influence that projection effects have on the completeness of the the Abell cluster catalogue in the context of an $Ω_0$=1 CDM Universe. We construct a galaxy catalogue and identify clusters using an algorithm that mimics Abell's method. Over 30% of Richness Class $\geq$1 clusters have been selected despite not meeting the required intrinsic (3D) richness criterion. Velocity dispersions are shown to have been systematically overestimated.

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M. P. van Haarlem. 1996-01-15. Projection Effects in the Abell Catalogue. https://arxiv.org/abs/astro-ph/9601081

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