Preprint typeset using LATEX style emulateapj v. 5/2/11 MASS CALIBRATION AND COSMOLOGICAL ANALYSIS OF THE SPT-SZ GALAXY CLUSTER SAMPLE USING VELOCITY DISPERSION σv AND X-RAY YX MEASUREMENTS

We present a velocity dispersion-based mass calibration of the South Pole Telescope Sunyaev-Zel’dovich effect survey (SPT-SZ) galaxy cluster sample. Using a homogeneously selected sample of 100 cluster candidates from 720 deg2 of the survey along with 63 velocity dispersion (σv) and 16 X-ray YX measurements of sample clusters, we simultaneously calibrate the mass-observable relation and constrain cosmological parameters. Our method accounts for cluster selection, cosmological sen-sitivity, and uncertainties in the mass calibrators. The calibrations using σv and YX are consistent at the 0.6σ level, with the σv calibration preferring ∼16 % higher masses. We use the full SPTCL dataset (SZ clusters+σv+YX) to measure σ8(Ωm/0.27) 0.3 = 0.809 ± 0.036 within a flat ΛCDM model. The SPT cluster abundance is lower than preferred by either the WMAP9 or Planck+WMAP9 po-larization (WP) data, but assuming the sum of the neutrino masses is mν = 0.06 eV, we find the datasets to be consistent at the 1.0σ level for WMAP9 and 1.5σ for Planck+WP. Allowing fo