A GMBCG GALAXY CLUSTER CATALOG OF 55,424 RICH CLUSTERS FROM SDSS DR7

被引：242

作者：

Hao, Jiangang ^{[1
]}

McKay, Timothy A. ^{[2
,3
]}

Koester, Benjamin P. ^{[4
]}

Rykoff, Eli S. ^{[5
,6
]}

Rozo, Eduardo ^{[7
]}

Annis, James ^{[1
]}

Wechsler, Risa H. ^{[8
,9
]}

Evrard, August ^{[2
,3
]}

Siegel, Seth R. ^{[2
]}

Becker, Matthew ^{[10
]}

Busha, Michael ^{[8
]}

Gerdes, David ^{[2
]}

Johnston, David E. ^{[1
]}

Sheldon, Erin ^{[11
]}

机构：

[1] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA

[2] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[3] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

[4] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA

[5] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[6] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Phys, Berkeley, CA 94720 USA

[7] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[8] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA

[9] SLAC Natl Accelerator Lab, Particle & Particle Astrophys Dept, Menlo Pk, CA 94025 USA

[10] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[11] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2010年 / 191卷 / 02期

基金：

美国国家科学基金会;

关键词：

catalogs; galaxies: clusters: general; methods: statistical; DIGITAL SKY SURVEY; COLOR-MAGNITUDE RELATION; RED-SEQUENCE; COSMOLOGICAL CONSTRAINTS; EVOLUTION; MAXBCG; UNIVERSE; VIRGO; CALIBRATION; ALGORITHM;

D O I：

10.1088/0067-0049/191/2/254

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a large catalog of optically selected galaxy clusters from the application of a new Gaussian Mixture Brightest Cluster Galaxy (GMBCG) algorithm to SDSS Data Release 7 data. The algorithm detects clusters by identifying the red-sequence plus brightest cluster galaxy (BCG) feature, which is unique for galaxy clusters and does not exist among field galaxies. Red-sequence clustering in color space is detected using an Error Corrected Gaussian Mixture Model. We run GMBCG on 8240 deg(2) of photometric data from SDSS DR7 to assemble the largest ever optical galaxy cluster catalog, consisting of over 55,000 rich clusters across the redshift range from 0.1 < z < 0.55. We present Monte Carlo tests of completeness and purity and perform cross-matching with X-ray clusters and with the maxBCG sample at low redshift. These tests indicate high completeness and purity across the full redshift range for clusters with 15 or more members.

引用

页码：254 / 274

页数：21

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