@article{6b8c0fec6897450bab59424caa68c31f,
title = "Weak-lensing mass calibration of redMaPPer galaxy clusters in dark energy survey Science verification data",
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 ≤ λ ≤ 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; clustermember 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(λ, z) ∝ M0λF (1 + z)G. We find M0 ≡ (M200m λ = 30, z = 0.5) = [2.35 ± 0.22 (stat) ± 0.12 (sys)] × 1014 M⊙, 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.",
keywords = "Cosmology, Galaxies: clusters: general, Gravitational lensing: weak, Observations",
author = "{The DES Collaboration} and P. Melchior and D. Gruen and T. McClintock and Varga, {T. N.} and E. Sheldon and E. Rozo and A. Amara and Becker, {M. R.} and Benson, {B. A.} and A. Bermeo and Bridle, {S. L.} and J. Clampitt and Dietrich, {J. P.} and Hartley, {W. G.} and D. Hollowood and B. Jain and M. Jarvis and T. Jeltema and T. Kacprzak and N. MacCrann and Rykoff, {E. S.} and A. Saro and E. Suchyta and Troxel, {M. A.} and J. Zuntz and C. Bonnett and Plazas, {A. A.} and Abbott, {T. M.C.} and Abdalla, {F. B.} and J. Annis and A. Benoit-L{\'e}vy and Bernstein, {G. M.} and E. Bertin and D. Brooks and E. Buckley-Geer and Rosell, {A. Carnero} and Kind, {M. Carrasco} and J. Carretero and Cunha, {C. E.} and D'Andrea, {C. B.} and {da Costa}, {L. N.} and S. Desai and Eifler, {T. F.} and B. Flaugher and P. Fosalba and J. Garc{\'i}a-Bellido and E. Gaztanaga and Gerdes, {D. W.} and Gruendl, {R. A.} and J. Gschwend",
note = "Publisher Copyright: {\textcopyright} 2017 The Authors.",
year = "2017",
month = aug,
doi = "10.1093/mnras/stx1053",
language = "English",
volume = "469",
pages = "4899--4920",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",
}