论文标题
测量单个簇上的弱透镜质量
Measuring weak lensing masses on individual clusters
论文作者
论文摘要
我们提供了使用Hyper Soprime-CAM弱透镜数据的Redmapper Sloan Digital Sky Survey DR8目录的458个星系簇样品的样本的弱透镜质量估计。我们开发了一种方法来快速估算弱透镜剪切的簇质量，并使用此方法来估计样品中每个星系簇的弱透镜质量。随后，我们限制了质量丰富的关系以及聚类丰富度和测得的弱透镜质量之间的固有散射。当计算所有簇的质量富裕关系$λ> 20 $时，我们发现与深度良好关系的斜率有张力，而深色能量调查1年级堆叠了弱透镜分析。对于减少了丰富性$λ> 40美元的簇样品的样本，我们的结果与Dark Energy Survey Year 1 Analysis一致。
We present weak lensing mass estimates for a sample of 458 galaxy clusters from the redMaPPer Sloan Digital Sky Survey DR8 catalogue using Hyper Suprime-Cam weak lensing data. We develop a method to quickly estimate cluster masses from weak lensing shear and use this method to estimate weak lensing masses for each of the galaxy clusters in our sample. Subsequently, we constrain the mass-richness relation as well as the intrinsic scatter between the cluster richness and the measured weak lensing masses. When calculating the mass-richness relation for all clusters with a richness $λ>20$, we find a tension in the slope of the mass-richness relation with the Dark Energy Survey Year 1 stacked weak lensing analysis. For a reduced sample of clusters with a richness $λ>40$, our results are consistent with the Dark Energy Survey Year 1 analysis.
