Completeness in Photometric and Spectroscopic Searches for Clusters

Details Completeness in Photometric and Spectroscopic Searches for Clusters Completeness in Photometric and Spectroscopic Searches for Clusters

2001-10-12

arxiv.org/abs/astro-ph/0110307v2

Astrophys.J.574:24,2002

Astronomy and Astrophysics

Astrophysics

ApJ in press, 15 pages, 10 figures

Scientific paper

10.1086/340944

We investigate, using simulated galaxy catalogues, the completeness of searches for massive clusters of galaxies in redshift surveys or imaging surveys with photometric redshift estimates, i.e. what fraction of clusters (M>10^14/h Msun) are found in such surveys. We demonstrate that the matched filter method provides an efficient and reliable means of identifying massive clusters even when the redshift estimates are crude. In true redshift surveys the method works extremely well. We demonstrate that it is possible to construct catalogues with high completeness, low contamination and both varying little with redshift.

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