Weak-lensing mass calibration of the Atacama Cosmology Telescope equatorial Sunyaev-Zeldovich cluster sample with the Canada-France-Hawaii telescope stripe 82 survey
Weak-lensing mass calibration of the Atacama Cosmology Telescope equatorial Sunyaev-Zeldovich cluster sample with the Canada-France-Hawaii telescope stripe 82 survey
复制标题
DOI：
10.1088/1475-7516/2016/08/013
复制
发表时间：
2016-08-01
影响因子：
6.4
通讯作者：
Wollack, E. J.
中科院分区：
文献类型：
--
作者：
Battaglia, N.;Leauthaud, A.;Wollack, E. J.
质量校准不确定性是利用星系团来约束宇宙学参数的最大系统效应。我们提出了弱透镜质量测量从加拿大-法国-夏威夷望远镜条纹82调查的星系团选择通过其高信号噪声热Sunyaev-Zeldovich（tSZ）的信号测量与阿塔卡马宇宙学望远镜（ACT）。对于tSZ信噪比大于5的9个ACT团簇的样本，平均弱透镜质量为（4.8 +/- 0.8）x 10（14）M圆点，与tSZ质量估计值（4.70 +/- 1.0）x 10（14）M圆点一致，该估计值假定了团簇气体的普遍压力分布。我们的结果是一致的，与以前的弱透镜测量tSZ检测集群从普朗克卫星。当比较我们的结果，我们估计爱丁顿偏置校正普朗克和弱透镜集群，这是以前被排除在外的样品交叉。
Mass calibration uncertainty is the largest systematic effect for using clusters of galaxies to constrain cosmological parameters. We present weak lensing mass measurements from the Canada-France-Hawaii Telescope Stripe 82 Survey for galaxy clusters selected through their high signal-to-noise thermal Sunyaev-Zeldovich (tSZ) signal measured with the Atacama Cosmology Telescope (ACT). For a sample of 9 ACT clusters with a tSZ signal-to-noise greater than five the average weak lensing mass is (4.8 +/- 0.8) x 10(14) M-circle dot, consistent with the tSZ mass estimate of (4.70 +/- 1.0) x 10(14) M-circle dot which assumes a universal pressure profile for the cluster gas. Our results are consistent with previous weak-lensing measurements of tSZ-detected clusters from the Planck satellite. When comparing our results, we estimate the Eddington bias correction for the sample intersection of Planck and weak-lensing clusters which was previously excluded.