Weak lensing analysis of SZ-selected clusters of galaxies from the SPT and Planck surveys

• DOI: 10.1093/mnras/stu949
• Publication Date: 2014-06-18T01:07:55Z
• Authors: D. Gruen; S. Seitz; F. Brimioulle; R. Kosyra; J. Koppenhoefer; C.-H. Lee; R. Bender; A. Riffeser; T. Eichner; T. Weidinger; M. Bierschenk
• Keywords: South Pole Telescope; Photometric redshift

We present the weak lensing analysis of Wide-Field Imager SZ Cluster galaxy (WISCy) sample, a set 12 clusters galaxies selected for their Sunyaev-Zel'dovich (SZ) effect. After developing new and improved methods background selection determination geometric scaling factors from absolute multi-band photometry in cluster fields, we compare mass estimate with public X-ray data. find consistency hydrostatic masses no significant bias, dependent bias less than 20% intrinsic scatter constrain fgas,500c=0.128+0.029-0.023. independently calibrate South Pole Telescope significance-mass relation previous results. The comparison Planck Compton parameters, whether extracted self-consistently mass-observable (MOR) or using prior information on size, shows discrepancies. deviations MOR strongly correlate redshift. This could be explained either by significantly shallower expected slope decrement versus corresponding problem based calibration, size redshift signal extraction.