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Title: A GMBCG GALAXY CLUSTER CATALOG OF 55,424 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 deg{sup 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.

Authors:
; ;  [1]; ; ; ;  [2];  [3];  [4];  [5]; ;  [6];  [7];  [8]
  1. Center for Particle Astrophysics, Fermi National Accelerator Laboratory, Batavia, IL 60510 (United States)
  2. Department of Physics, University of Michigan, Ann Arbor, MI 48109 (United States)
  3. Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637 (United States)
  4. Physics Department, University of California at Santa Barbara, Santa Barbara, CA 93106 (United States)
  5. Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637 (United States)
  6. Kavli Institute for Particle Astrophysics and Cosmology, Physics Department, Stanford University, Stanford, CA 94305 (United States)
  7. Department of Physics, The University of Chicago, Chicago, IL 60637 (United States)
  8. Brookhaven National Laboratory, Upton, NY 11973 (United States)
Publication Date:
OSTI Identifier:
21454904
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal, Supplement Series
Additional Journal Information:
Journal Volume: 191; Journal Issue: 2; Other Information: DOI: 10.1088/0067-0049/191/2/254; Journal ID: ISSN 0067-0049
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COLOR; GALAXIES; GALAXY CLUSTERS; MIXTURES; MONTE CARLO METHOD; RED SHIFT; X RADIATION; CALCULATION METHODS; DISPERSIONS; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; OPTICAL PROPERTIES; ORGANOLEPTIC PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS

Citation Formats

Jiangang, Hao, Annis, James, Johnston, David E, McKay, Timothy A, Evrard, August, Siegel, Seth R, Gerdes, David, Koester, Benjamin P, Rykoff, Eli S, Rozo, Eduardo, Wechsler, Risa H, Busha, Michael, Becker, Matthew, and Sheldon, Erin. A GMBCG GALAXY CLUSTER CATALOG OF 55,424 RICH CLUSTERS FROM SDSS DR7. United States: N. p., 2010. Web. doi:10.1088/0067-0049/191/2/254.
Jiangang, Hao, Annis, James, Johnston, David E, McKay, Timothy A, Evrard, August, Siegel, Seth R, Gerdes, David, Koester, Benjamin P, Rykoff, Eli S, Rozo, Eduardo, Wechsler, Risa H, Busha, Michael, Becker, Matthew, & Sheldon, Erin. A GMBCG GALAXY CLUSTER CATALOG OF 55,424 RICH CLUSTERS FROM SDSS DR7. United States. doi:10.1088/0067-0049/191/2/254.
Jiangang, Hao, Annis, James, Johnston, David E, McKay, Timothy A, Evrard, August, Siegel, Seth R, Gerdes, David, Koester, Benjamin P, Rykoff, Eli S, Rozo, Eduardo, Wechsler, Risa H, Busha, Michael, Becker, Matthew, and Sheldon, Erin. Wed . "A GMBCG GALAXY CLUSTER CATALOG OF 55,424 RICH CLUSTERS FROM SDSS DR7". United States. doi:10.1088/0067-0049/191/2/254.
@article{osti_21454904,
title = {A GMBCG GALAXY CLUSTER CATALOG OF 55,424 RICH CLUSTERS FROM SDSS DR7},
author = {Jiangang, Hao and Annis, James and Johnston, David E and McKay, Timothy A and Evrard, August and Siegel, Seth R and Gerdes, David and Koester, Benjamin P and Rykoff, Eli S and Rozo, Eduardo and Wechsler, Risa H and Busha, Michael and Becker, Matthew and Sheldon, Erin},
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 deg{sup 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.},
doi = {10.1088/0067-0049/191/2/254},
journal = {Astrophysical Journal, Supplement Series},
issn = {0067-0049},
number = 2,
volume = 191,
place = {United States},
year = {2010},
month = {12}
}