期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 449, 期 1, 页码 685-714出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stv275
关键词
cosmology: observations; dark matter
资金
- Netherlands organization for Scientific Research (NWO) Vidi grant [639.042.814]
- European Research Council FP7 [279396]
- NSERC Canada through its Discovery Grant program
- NASA ADAP [NNX12AE45G]
- Canadian Space Agency
- NASA [NNX12AE45G, 53421] Funding Source: Federal RePORTER
Masses of clusters of galaxies from weak gravitational lensing analyses of ever larger samples are increasingly used as the reference to which baryonic scaling relations are compared. In this paper we revisit the analysis of a sample of 50 clusters studied as part of the Canadian Cluster Comparison Project. We examine the key sources of systematic error in cluster masses. We quantify the robustness of our shape measurements and calibrate our algorithm empirically using extensive image simulations. The source redshift distribution is revised using the latest state-of-the-art photometric redshift catalogues that include new deep near-infrared observations. None the less we find that the uncertainty in the determination of photometric redshifts is the largest source of systematic error for our mass estimates. We use our updated masses to determine b, the bias in the hydrostatic mass, for the clusters detected by Planck. Our results suggest 1 - b = 0.76 +/- 0.05 (stat) +/- 0.06 (syst), which does not resolve the tension with the measurements from the primary cosmic microwave background.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据