The Red-Sequence Cluster Surveys

D.G. Gilbank; E. Ellingson; H. Hoekstra; H.K.C. Yee; M.D. Gladders; S. Majumdar; the RCS-2 Collaboration

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The Red-Sequence Cluster Surveys

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arxiv astro-ph/0701839 v1 pith:P7VRNLB7 submitted 2007-01-29 astro-ph

H.K.C. Yee , M.D. Gladders , D.G. Gilbank , S. Majumdar , H. Hoekstra , E. Ellingson , the RCS-2 Collaboration This is my paper · ORCID

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keywords clustersurveyscosmologicalmassopticalrcs-1red-sequenceagreement

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abstract

The Red-Sequence Cluster Surveys (RCS-1 and RCS-2) are large optical imaging surveys optimized to create well-characterized catalogs of clusters of galaxies up to a redshift of ~1. We describe our first cosmological analysis, using the self-calibration technique, of a cluster sample of ~1000 from the 90 sq. deg RCS-1, using optical richness as a mass proxy. We obtain values for the cosmological parameters $\Omega_m$ and $\sigma_8$ that are in excellent agreement with the year-three WMAP results. Furthermore, the derived cluster richness-mass relationship is entirely consistent with those measured directly using dynamical mass measurements.

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