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Type: Artigo
Title: Weak-lensing mass calibration of redMaPPer galaxy clusters in Dark Energy Survey Science Verification data
Author: Melchior, P.
Gruen, D.
McClintock, T.
Varga, T. N.
Sheldon, E.
Rozo, E.
Amara, A.
Becker, M. R.
Benson, B. A.
Bermeo, A.
Bridle, S. L.
Clampitt, J.
Dietrich, J. P.
Hartley, W. G.
Hollowood, D.
Jain, B.
Jarvis, M.
Jeltema, T.
Kacprzak, T.
MacCrann, N.
Rykoff, E. S.
Saro, A.
Suchyta, E.
Troxel, M. A.
Zuntz, J.
Bonnett, C.
Plazas, A. A.
Abbott, T. M. C.
Abdalla, F. B.
Annis, J.
Benoit-Levy, A.
Bernstein, G. M.
Bertin, E.
Brooks, D.
Buckley-Geer, E.
Rosell, A. C.
Kind, M. C.
Carretero, J.
Cunha, C. E.
D'Andrea, C. B.
da Costa, L. N.
Desai, S.
Eifler, T. F.
Flaugher, B.
Fosalba, P.
Garcia-Bellido, J.
Gaztanaga, E.
Gerdes, D. W.
Gruendl, R. A.
Gschwend, J.
Gutierrez, G.
Honscheid, K.
James, D. J.
Kirk, D.
Krause, E.
Kuehn, K.
Kuropatkin, N.
Lahav, O.
Lima, M.
Maia, M. A. G.
March, M.
Martini, P.
Menanteau, F.
Miller, C. J.
Miquel, R.
Mohr, J. J.
Nichol, R. C.
Ogando, R.
Romer, A. K.
Sanchez, E.
Scarpine, V.
Sevilla-Noarbe, I.
Smith, R. C.
Soares-Santos, M.
Sobreira, F.
Swanson, M. E. C.
Tarle, G.
Thomas, D.
Walker, A. R.
Weller, J.
Zhang, Y.
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.
Subject: Galáxias - Aglomerados
Lentes gravitacionais
Cosmologia - Observações
Country: Reino Unido
Editor: Oxford University Press
Rights: aberto
Identifier DOI: 10.1093/mnras/stx1053
Date Issue: 2017
Appears in Collections:IFGW - Artigos e Outros Documentos

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