1806.10614
The Wendelstein Weak Lensing (WWL) pathfinder: accurate weak lensing masses for Planck clusters
Rehmann, Gruen, Seitz, Bender, et al
Present results from WWL project, in which 3 intermediate redshift Planck clusters of galaxies were observed with the new 30'x30' wide field imager at the 2m Fraunhofer Telescope at Wendelstein Observatory. Investigate the presence of biases in the shear catalogues and estimate their impact on the WL mass estimates. The overall calibration uncertainty depends on the cluster redshift and is below 8.1-15% for z~0.27-0.77. It will decrease with improvements on the background sample selection and the multiplicative shear bias calibration. Present the first WL mass estimates for PSZ1 G109.88+28.94 and PSZ1 G139.61+24.20, two SZ-selected cluster candidates. Based on Wendelstein colors and SDSS photometry, find that the redshift of PSZ1 G10988 has to be corrected to z~0.77. Investigate the influence of LoS structures on the WL mass esimtates and find upper limits for 2 groups in each of the fields of PSZ1 G109 and PSZ1 G186. Compare the results to SZ and dynamical mass estimates from the literature, and in the case of PSZ1 G186 to previous WL mass estimates. Conclude that the pathfinder project demonstrates that WL cluster masses can be accurately measured with the 2m Fraunhofer Telescope.
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