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Title: A GMBCG galaxy cluster catalog of 55,880 rich clusters from SDSS DR7

Abstract

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 square degrees 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.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
986987
Report Number(s):
FERMILAB-PUB-10-287-A
TRN: US201018%%200
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALGORITHMS; COLOR; GALAXIES; GALAXY CLUSTERS; MIXTURES; Astrophysics

Citation Formats

Hao, Jiangang, McKay, Timothy A, Koester, Benjamin P, Rykoff, Eli S, Rozo, Eduardo, Annis, James, Wechsler, Risa H, Evrard, August, Siegel, Seth R, Becker, Matthew, Busha, Michael, and /Fermilab /Michigan U. /Chicago U., Astron. Astrophys. Ctr. /UC, Santa Barbara /KICP, Chicago /KIPAC, Menlo Park /SLAC /Caltech /Brookhaven. A GMBCG galaxy cluster catalog of 55,880 rich clusters from SDSS DR7. United States: N. p., 2010. Web.
Hao, Jiangang, McKay, Timothy A, Koester, Benjamin P, Rykoff, Eli S, Rozo, Eduardo, Annis, James, Wechsler, Risa H, Evrard, August, Siegel, Seth R, Becker, Matthew, Busha, Michael, & /Fermilab /Michigan U. /Chicago U., Astron. Astrophys. Ctr. /UC, Santa Barbara /KICP, Chicago /KIPAC, Menlo Park /SLAC /Caltech /Brookhaven. A GMBCG galaxy cluster catalog of 55,880 rich clusters from SDSS DR7. United States.
Hao, Jiangang, McKay, Timothy A, Koester, Benjamin P, Rykoff, Eli S, Rozo, Eduardo, Annis, James, Wechsler, Risa H, Evrard, August, Siegel, Seth R, Becker, Matthew, Busha, Michael, and /Fermilab /Michigan U. /Chicago U., Astron. Astrophys. Ctr. /UC, Santa Barbara /KICP, Chicago /KIPAC, Menlo Park /SLAC /Caltech /Brookhaven. Sun . "A GMBCG galaxy cluster catalog of 55,880 rich clusters from SDSS DR7". United States. https://www.osti.gov/servlets/purl/986987.
@article{osti_986987,
title = {A GMBCG galaxy cluster catalog of 55,880 rich clusters from SDSS DR7},
author = {Hao, Jiangang and McKay, Timothy A and Koester, Benjamin P and Rykoff, Eli S and Rozo, Eduardo and Annis, James and Wechsler, Risa H and Evrard, August and Siegel, Seth R and Becker, Matthew and Busha, Michael and /Fermilab /Michigan U. /Chicago U., Astron. Astrophys. Ctr. /UC, Santa Barbara /KICP, Chicago /KIPAC, Menlo Park /SLAC /Caltech /Brookhaven},
abstractNote = {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 square degrees 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {8}
}