Cluster Mass Calibration at High Redshift: HST Weak Lensing Analysis of 13 Distant Galaxy Clusters from the South Pole Telescope Sunyaev-Zel'dovich Survey

Autor: Stefan Hilbert, F. W. High, Anthony H. Gonzalez, Adam Mantz, A. von der Linden, Sebastian Bocquet, Christopher W. Stubbs, Alfredo Zenteno, Michael McDonald, S F Raihan, Matthew B. Bayliss, Ryan J. Foley, Christopher B. Morrison, Richard Massey, Bradford Benson, J. P. Dietrich, T. de Haan, D. Applegate, C. Stern, Joseph J. Mohr, Shantanu Desai, A. Saro, Steven W. Allen, Henk Hoekstra, I-Non Chiu, Christian L. Reichardt, Tim Schrabback, Lindsey Bleem, Patrick Simon
Přispěvatelé: Schrabback, T., Applegate, D., Dietrich, J. P., Hoekstra, H., Bocquet, S., Gonzalez, A. H., von der Linden, A., Mcdonald, M., Morrison, C. B., Raihan, S. F., Allen, S. W., Bayliss, M., Benson, B. A., Bleem, L. E., Chiu, I., Desai, S., Foley, R. J., de Haan, T., High, F. W., Hilbert, S., Mantz, A., B., Massey, R., Mohr, J., Reichardt, C. L., Saro, A., Simon, P., Stern, C., Stubbs, C. W., Zenteno, A.
Předmět:
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
gravitational lensing: weak
weak [gravitational lensing]
0103 physical sciences
clusters: general [galaxies]
Astrophysics - Cosmology and Nongalactic Astrophysic
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Weak gravitational lensing
Galaxy cluster
Photometric redshift
galaxies: clusters: general
cosmology: observations
Astrophysics - Cosmology and Nongalactic Astrophysics
Astrophysics - Astrophysics of Galaxies
Physics
010308 nuclear & particles physics
Astronomy
Astronomy and Astrophysics
Hubble Ultra-Deep Field
Redshift survey
Redshift
Galaxy
South Pole Telescope
Space and Planetary Science
Astrophysics of Galaxies (astro-ph.GA)
High Energy Physics::Experiment
observation [cosmology]
Zdroj: NASA Astrophysics Data System
Monthly Notices of the Royal Astronomical Society
Monthly notices of the Royal Astronomical Society, 2018, Vol.474(2), pp.2635-2678 [Peer Reviewed Journal]
Monthly Notices of the Royal Astronomical Society, 474(2), 2635-2678
arXiv
Popis: We present an HST/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 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 normalisation of the mass-temperature scaling relation ln(E(z) M_500c/10^14 M_sun)=A+1.5 ln(kT/7.2keV) to A=1.81^{+0.24}_{-0.14}(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^{+3.7}_{-1.8}.
49 pages, 11 tables, 38 figures. Matches the version accepted for publication in MNRAS
Databáze: OpenAIRE
Externí odkaz: