期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 474, 期 2, 页码 2635-2678出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stx2666
关键词
gravitational lensing: weak; galaxies: clusters: general; cosmology: observations
资金
- German Federal Ministry of Economics and Technology (BMWi) through DLR [50 OR 1210, 50 OR 1308, 50 OR 1407, 50 OR 1610]
- NSF [AST-0444059-001]
- SAO [GO0-11147A]
- Kavli Institute for Cosmological Physics at the University of Chicago [NSF PHY-1125897]
- Kavli Foundation
- NWO VIDI [639.042.814]
- ERC [279396]
- U.S. Department of Energy [DE-AC02-06CH11357]
- DFG Cluster of Excellence 'Origin and Structure of the Universe'
- Transregio program 'The Dark Universe' [TR33]
- Alfred P. Sloan Foundation
- David and Lucile Packard Foundation
- Miller Research Fellowship
- European DUEL Research-Training Network [MRTN-CT-2006-036133]
- Deutsche Forschungsgemeinschaft [SCHN 342/7-1]
- DFG [Hi 1495/2-1]
- Fermi Research Alliance, LLC [De-AC02-07CH11359]
- United States Department of Energy
- Australian Research Council's Discovery Projects scheme [DP150103208]
- Danish National Research Foundation
- SPT follow-up GO programmes [12246, 12477]
- GO programmes [9425, 9500, 9583, 10134, 12064, 12440, 12757, 9978, 10086, 11563, 12498]
- 3D-HST Treasury Program [GO 12177, 12328]
- UVUDF Project [GO 12534]
- NASA [NAS 5-26555]
- La Silla Paranal Observatory [086.A-0741, 088.A-0796, 088.A-0889, 089.A-0824]
- European Research Council (ERC) [279396] Funding Source: European Research Council (ERC)
- Direct For Mathematical & Physical Scien
- Division Of Physics [1125897] Funding Source: National Science Foundation
- Directorate For Geosciences
- Office of Polar Programs (OPP) [1248097] Funding Source: National Science Foundation
- Science and Technology Facilities Council [ST/P000541/1] Funding Source: researchfish
- STFC [ST/P000541/1] Funding Source: UKRI
We present an HST/Advanced Camera for Surveys (ACS) weak gravitational lensing analysis of 13 massive high-redshift (z(median) = 0.88) galaxy clusters discovered in the South Pole Telescope (SPT) Sunyaev-Zel'dovich Survey. This study is part of a larger campaign that aims to robustly calibrate mass-observable scaling relations over a wide range in redshift to enable improved cosmological constraints from the SPT cluster sample. We introduce new strategies to ensure that systematics in the lensing analysis do not degrade constraints on cluster scaling relations significantly. First, we efficiently remove cluster members from the source sample by selecting very blue galaxies in V - I colour. Our estimate of the source redshift distribution is based on Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) data, where we carefully mimic the source selection criteria of the cluster fields. We apply a statistical correction for systematic photometric redshift errors as derived from Hubble Ultra Deep Field data and verified through spatial cross-correlations. We account for the impact of lensing magnification on the source redshift distribution, finding that this is particularly relevant for shallower surveys. Finally, we account for biases in the mass modelling caused by miscentring and uncertainties in the concentration-mass relation using simulations. In combination with temperature estimates from Chandra we constrain the normalization of the mass-temperature scaling relation ln (E(z) M-500c/10(14)M(circle dot)) = A + 1.5ln (kT/7.2 keV) to A = 1.81(-0.14)(+0.24)(stat.)+/- 0.09(sys.), consistent with self-similar redshift evolution when compared to lower redshift samples. Additionally, the lensing data constrain the average concentration of the clusters to c(200c) = 5.6(-1.8)(+3.7).
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