Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20921502b&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #215.02; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
We report here on the detection of 150,000 galaxy cluster/group candidates based on g', r', and i' imaging (|b| > 30 deg) of the Sloan Digital Sky Survey DR5. Galaxy clusters are detected as overdensities based on the presence of the early-type cluster galaxy red sequence using the Voronoi Tessellation and Percolation technique (VTP). Redshift estimates are derived from the position of the cluster red sequence in the color-magnitude plane. Optical richness measurements, based on the cluster center-galaxy correlation amplitude (Bgc), have been derived. Cluster finding mass-dependent selection functions have been measured based on extensive simulations. Our catalog offers the community a rich resource from which galaxy clusters and groups can be studied.
Barkhouse Wayne
Häcker Tobias
Mohr Joseph John
Song JeongHyeon
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