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

Research output: Contribution to journalArticle

  • P. Melchior
  • D. Gruen
  • T. McClintock
  • T. N. Varga
  • E. Sheldon
  • E. Rozo
  • M. R. Becker
  • B. A. Benson
  • A. Bermeo
  • S. L. Bridle
  • J. Clampitt
  • J. P. Dietrich
  • W. G. Hartley
  • D. Hollowood
  • B. Jain
  • M. Jarvis
  • T. Jeltema
  • T. Kacprzak
  • N. MacCrann
  • E. S. Rykoff
  • A. Saro
  • E. Suchyta
  • M. A. Troxel
  • J. Zuntz
  • C. Bonnett
  • A. A. Plazas
  • T. M. C. Abbott
  • F. B. Abdalla
  • J. Annis
  • A. Benoit-Lévy
  • G. M. Bernstein
  • E. Bertin
  • D. Brooks
  • E. Buckley-Geer
  • A. Carnero Rosell
  • M. Carrasco Kind
  • J. Carretero
  • C. E. Cunha
  • C. B. D'Andrea
  • L. N. da Costa
  • S. Desai
  • T. F. Eifler
  • B. Flaugher
  • P. Fosalba
  • J. García-Bellido
  • E. Gaztanaga
  • D. W. Gerdes
  • R. A. Gruendl
  • J. Gschwend
  • G. Gutierrez
  • K. Honscheid
  • D. J. James
  • D. Kirk
  • E. Krause
  • K. Kuehn
  • N. Kuropatkin
  • O. Lahav
  • M. Lima
  • M. A. G. Maia
  • M. March
  • P. Martini
  • F. Menanteau
  • C. J. Miller
  • R. Miquel
  • J. J. Mohr
  • R. Ogando
  • A. K. Romer
  • E. Sanchez
  • V. Scarpine
  • I. Sevilla-Noarbe
  • R. C. Smith
  • M. Soares-Santos
  • F. Sobreira
  • M. E. C. Swanson
  • G. Tarle
  • A. R. Walker
  • J. Weller
  • Y. Zhang
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; 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(λ,z)∝M0λF(1+z). 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.
Original languageEnglish
Pages (from-to)4899-4920
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
Early online date16 May 2017
Publication statusPublished - Aug 2017


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