The Red-sequence Cluster Survey. I. The survey and cluster catalogs for patches RCS 0926+37 and RCS 1327+29

被引:321
作者
Gladders, MD
Yee, HKC
机构
[1] Carnegie Inst Washington Observ, Pasadena, CA 91101 USA
[2] Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 3H8, Canada
关键词
galaxies : clusters : general; methods : statistical; surveys;
D O I
10.1086/427327
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Red-Sequence Cluster Survey (RCS) is a similar to 100 deg(2), two-filter imaging survey in the R-C and z' filters, designed primarily to locate and characterize galaxy clusters to redshifts as high as z = 1.4. This paper provides a detailed description of the survey strategy and execution, including a thorough discussion of the photometric and astrometric calibration of the survey data. The data are shown to be calibrated to a typical photometric uncertainty of 0.03 - 0.05 mag, with total astrometric uncertainties less than 0."25 for most objects. We also provide a detailed discussion of the adaptation of a previously described cluster search algorithm ( the cluster red-sequence method) to the vagaries of real survey data, with particular attention to techniques for accounting for subtle variations in survey depths caused by changes in seeing and sky brightness and transparency. A first catalog of RCS clusters is also presented, for the survey patches RCS 0926+37 and RCS 1327+29. These catalogs, representing about 10% of the total survey and comprising a total of 429 candidate clusters and groups, contain a total of 67 cluster candidates at a photometric redshift of 0: 9 < z < 1.4, down to the chosen significance threshold of 3.29 sigma.
引用
收藏
页码:1 / 29
页数:29
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