J/ApJ/703/2232Weak lensing of SDSS galaxy clusters. III. (Sheldon+, 2009)

Cross-correlation weak lensing of SDSS galaxy clusters. III. Mass-to-Light ratios. Sheldon E.S., Johnston D.E., Masjedi M., McKay T.A., Blanton M.R., Scranton R., Wechsler R.H., Koester B.P., Hansen S.M., Frieman J.A., Annis J. <Astrophys. J., 703, 2232-2248 (2009)> =2009ApJ...703.2232SADC_Keywords: Gravitational lensing ; Clusters, galaxyKeywords: dark matter - galaxies: clusters: general - gravitational lensing - large-scale structure of universeAbstract: We present measurements of the excess mass-to-light ratio (M/L) measured around MaxBCG galaxy clusters observed in the Sloan Digital Sky Survey. This red-sequence cluster sample includes objects from small groups with M_{200}∼5x10^{12}/hM_{☉}to clusters with M_{200}∼10^{15}/hM_{☉}. Using cross-correlation weak lensing, we measure the excess mass density profile above the universal mean Δρ(r)=ρ(r)-{bar}ρ for clusters in bins of richness and optical luminosity. We also measure the excess luminosity density Δl(r)=l(r)-{bar}l measured in the z=0.25 i band. For both mass and light, we de-project the profiles to produce three-dimensional mass and light profiles over scales from 25h^{-1}kpc to 22h^{-1}Mpc. From these profiles we calculate the cumulative excess mass ΔM(r) and excess light ΔL(r) as a function of separation from the BCG.Description: In this work we measure the mean M/L's for SDSS groups and clusters drawn from the MaxBCG cluster sample (Koester et al. 2007ApJ...660..221K, 2007, Cat. J/ApJ/660/239). We compare the ensemble mass estimates from the first two papers in this series (Sheldon et al. 2009, Cat. J/ApJ/703/2217; Johnston et al. 2007arXiv0709.1159J) with ensemble measurements of the total light. We measure the mean mass using lensing, and the mean luminosity by correlating the clusters with the surrounding galaxies.File Summary:

FileName Lrecl Records Explanations

ReadMe 80 . This file table3.dat 347 560 Mass-to-light ratio data for MaxBCG clusters

See also: J/ApJ/703/2217 : Lensing measurement of SDSS galaxy clusters. I. (Sheldon+, 2009) J/ApJ/660/239 : MaxBCG catalog of 13823 galaxy clusters from SDSS (Koester+, 2007) J/ApJ/569/720 : Mass-to-light ratio of galaxy systems (Girardi+, 2002)Byte-by-byte Description of file: table3.dat

Bytes Format Units Label Explanations

1 A1 --- Type [N/L] Bin type: Number, N, or Luminosity, L 3- 14 E12.6 --- Bin Mean number or luminosity in bin (1) 16- 27 E12.6 Mpc Rad Radius in units of Mpc/h 29- 40 E12.6 --- Frac Fraction of light in the BCG 42- 54 E13.6 Msun/Lsun M/L The mass-to-light ratio (2) 56- 67 E12.6 Msun/Lsun e_M/L Error in M/L (2) 69- 81 E13.6 --- Corr0 C_{0}column value of correlation matrix 83- 95 E13.6 --- Corr1 C_{1}column value of correlation matrix 97-109 E13.6 --- Corr2 C_{2}column value of correlation matrix 111-123 E13.6 --- Corr3 C_{3}column value of correlation matrix 125-137 E13.6 --- Corr4 C_{4}column value of correlation matrix 139-151 E13.6 --- Corr5 C_{5}column value of correlation matrix 153-165 E13.6 --- Corr6 C_{6}column value of correlation matrix 167-179 E13.6 --- Corr7 C_{7}column value of correlation matrix 181-193 E13.6 --- Corr8 C_{8}column value of correlation matrix 195-207 E13.6 --- Corr9 C_{9}column value of correlation matrix 209-221 E13.6 --- Corr10 C_{10}column value of correlation matrix 223-235 E13.6 --- Corr11 C_{11}column value of correlation matrix 237-249 E13.6 --- Corr12 C_{12}column value of correlation matrix 251-263 E13.6 --- Corr13 C_{13}column value of correlation matrix 265-277 E13.6 --- Corr14 C_{14}column value of correlation matrix 279-291 E13.6 --- Corr15 C_{15}column value of correlation matrix 293-305 E13.6 --- Corr16 C_{16}column value of correlation matrix 307-319 E13.6 --- Corr17 C_{17}column value of correlation matrix 321-333 E13.6 --- Corr18 C_{18}column value of correlation matrix 335-347 E13.6 --- Corr19 C_{19}column value of correlation matrix

Note (1): The units are 10^{10}L☉/h^{2}for the Luminosity bins.Note (2): In units of h*M☉/L☉

History: From electronic version of the journalReferences: Sheldon et al. Paper I. 2009ApJ...703.2217S Cat. J/ApJ/703/2217 Johnston et al. Paper II. 2007arXiv0709.1159J Rozo et al. 2010ApJ...708..645R(End)Greg Schwarz [AAS], Emmanuelle Perret [CDS] 04-Nov-2011

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