J/ApJ/660/239 MaxBCG catalog of 13823 galaxy clusters from SDSS (Koester+, 2007) ================================================================================ A MaxBCG catalog of 13,823 galaxy clusters from the Sloan Digital Sky Survey. Koester B.P., McKay T.A., Annis J., Wechsler R.H., Evrard A., Bleem L., Becker M., Johnston D., Sheldon E., Nichol R., Miller C., Scranton R., Bahcall N., Barentine J., Brewington H., Brinkmann J., Harvanek M., Kleinman S., Krzesinski J., Long D., Nitta A., Schneider D.P., Sneddin S., Voges W., York D. =2007ApJ...660..239K ================================================================================ ADC_Keywords: Clusters, galaxy ; Redshifts ; Photometry, SDSS Keywords: galaxies: clusters: general Abstract: We present a catalog of galaxy clusters selected using the maxBCG red-sequence method from Sloan Digital Sky Survey photometric data. This catalog includes 13823 clusters with velocity dispersions greater than ~400km/s and is the largest galaxy cluster catalog assembled to date. They are selected in an approximately volume-limited way from a 0.5Gpc^3^ region covering 7500deg^2^ of sky between redshifts 0.1 and 0.3. Each cluster contains between 10 and 190 E/S0 ridgeline galaxies brighter than 0.4L* within a scaled radius R_200_. Description: Data for this study are drawn from the Sloan Digital Sky Survey a combined imaging and spectroscopic survey of 104deg^2^ in the north Galactic cap and a smaller region in the south. The imaging survey was carried out using a specially designed 2.5m telescope in drift-scan mode in five SDSS filters (u, g, r, i, and z) to a limiting magnitude of r<22.5. The maxBCG galaxy cluster selection algorithm applied to the input galaxy catalog is described in more detail in a companion paper (Koester et al., 2007ApJ...660..221K). File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 97 13823 Cluster catalog -------------------------------------------------------------------------------- See also: II/282 : The SDSS Photometric Catalog, Release 6 (Adelman-McCarthy+, 2007) http://www.sdss.org : SDSS Home Page Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 14 F14.10 deg RAdeg BCG Right Ascension in decimal degrees (J2000) 16- 29 F14.10 deg DEdeg BCG Declination in decimal degrees (J2000) 31- 38 F8.6 --- zph Photometric redshift 40- 49 F10.7 --- zsp ?=-1.00000 Spectroscopic BCG redshift 51- 59 F9.6 10+10solLum LBr BCG r-band luminosity 61- 69 F9.6 10+10solLum LBi BCG i-band luminosity 71- 79 F9.5 10+10solLum LTr Total r-band luminosity 81- 89 F9.5 10+10solLum LTi Total i-band luminosity 91- 93 I3 --- Ngal Detection richness 95- 97 I3 --- NR200 Scaled richness (1) -------------------------------------------------------------------------------- Note (1): the scaled richness is the number of E/S0 member galaxies brighter than 0.4L* and within R_200_ of the cluster center, R_200_ being the radius within which the density of galaxies with -24mag<=M_r_<=-16mag is 200 times the mean density of such galaxies. -------------------------------------------------------------------------------- Nomenclature note: Clusters identified as [KMA2007] DDD.ddddd+DD.ddddd in Simbad -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Greg Schwarz [AAS], Patricia Vannier [CDS] 05-Mar-2009