Skip to main content

Weak-lensing mass calibration of redMaPPer galaxy clusters in Dark Energy Survey Science Verification data

Author(s): Melchior, Peter M; Gruen, D; McClintock, T; Varga, TN; Sheldon, E; et al

To refer to this page use:
Abstract: We use weak-lensing shear measurements to determine the mean mass of optically selected galaxy clusters in Dark Energy Survey Science Verification data. In a blinded analysis, we split the sample of more than 8000 redMaPPer clusters into 15 subsets, spanning ranges in the richness parameter 5 <= lambda <= 180 and redshift 0.2 <= z <= 0.8, and fit the averaged mass density contrast profiles with a model that accounts for seven distinct sources of systematic uncertainty: shear measurement and photometric redshift errors; cluster-member contamination; miscentring; deviations from the NFW halo profile; halo triaxiality and line-of-sight projections. We combine the inferred cluster masses to estimate the joint scaling relation between mass, richness and redshift, M(lambda, z). M-0 lambda(F) (1 + z)(G). We find M-0 equivalent to M-200m vertical bar lambda = 30, z = 0.5 = [2.35 +/- 0.22 (stat) +/- 0.12 (sys)] x 10(14) M circle dot, with F = 1.12 +/- 0.20 (stat) +/- 0.06 (sys) and G = 0.18 +/- 0.75 (stat) +/- 0.24 (sys). The amplitude of the mass-richness relation is in excellent agreement with the weak-lensing calibration of redMaPPer clusters in SDSS by Simet et al. and with the Saro et al. calibration based on abundance matching of SPT-detected clusters. Our results extend the redshift range over which the mass-richness relation of redMaPPer clusters has been calibrated with weak lensing from z <= 0.3 to z <= 0.8. Calibration uncertainties of shear measurements and photometric redshift estimates dominate our systematic error budget and require substantial improvements for forthcoming studies.
Publication Date: Aug-2017
Electronic Publication Date: 16-May-2017
Citation: Melchior, P, Gruen, D, McClintock, T, Varga, TN, Sheldon, E, Rozo, E, Amara, A, Becker, MR, Benson, BA, Bermeo, A, Bridle, SL, Clampitt, J, Dietrich, JP, Hartley, WG, Hollowood, D, Jain, B, Jarvis, M, Jeltema, T, Kacprzak, T, MacCrann, N, Rykoff, ES, Saro, A, Suchyta, E, Troxel, MA, Zuntz, J, Bonnett, C, Plazas, AA, Abbott, TMC, Abdalla, FB, Annis, J, Benoit-Levy, A, Bernstein, GM, Bertin, E, Brooks, D, Buckley-Geer, E, Rosell, A Carnero, Kind, M Carrasco, Carretero, J, Cunha, CE, D Andrea, CB, da Costa, LN, Desai, S, Eifler, TF, Flaugher, B, Fosalba, P, Garcia-Bellido, J, Gaztanaga, E, Gerdes, DW, Gruendl, RA, Gschwend, J, Gutierrez, G, Honscheid, K, James, DJ, Kirk, D, Krause, E, Kuehn, K, Kuropatkin, N, Lahav, O, Lima, M, Maia, MAG, March, M, Martini, P, Menanteau, F, Miller, CJ, Miquel, R, Mohr, JJ, Nichol, RC, Ogando, R, Romer, AK, Sanchez, E, Scarpine, V, Sevilla-Noarbe, I, Smith, RC, Soares-Santos, M, Sobreira, F, Swanson, MEC, Tarle, G, Thomas, D, Walker, AR, Weller, J, Zhang, Y, Collaboration, DES. (2017). Weak-lensing mass calibration of redMaPPer galaxy clusters in Dark Energy Survey Science Verification data. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 469 (4899 - 4920. doi:10.1093/mnras/stx1053
DOI: doi:10.1093/mnras/stx1053
ISSN: 0035-8711
EISSN: 1365-2966
Related Item:
Pages: 4899 - 4920
Type of Material: Journal Article
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

Items in OAR@Princeton are protected by copyright, with all rights reserved, unless otherwise indicated.