TY - JOUR
T1 - Weak lensing measurement of the mass-richness relation of SDSS redMaPPer clusters
AU - Simet, Melanie
AU - McClintock, Tom
AU - Mandelbaum, Rachel
AU - Rozo, Eduardo
AU - Rykoff, Eli
AU - Sheldon, Erin
AU - Wechsler, Risa H.
N1 - Publisher Copyright:
© 2016 The Authors.
PY - 2017/4/21
Y1 - 2017/4/21
N2 - We perform a measurement of the mass-richness relation of the redMaPPer galaxy cluster catalogue using weak lensing data from the Sloan Digital Sky Survey (SDSS). We have carefully characterized a broad range of systematic uncertainties, including shear calibration errors, photo-z biases, dilution by member galaxies, source obscuration, magnification bias, incorrect assumptions about cluster mass profiles, cluster centring, halo triaxiality and projection effects. We also compare measurements of the lensing signal from two independently produced shear and photometric redshift catalogues to characterize systematic errors in the lensing signal itself. Using a sample of 5570 clusters from 0.1 ≤ z ≤ 0.33, the normalization of our power-law mass versus λ relation is log10[M200m/h-1M⊙] = 14.344 ± 0.021 (statistical) ±0.023 (systematic) at a richness λ=40, a 7 per cent calibration uncertainty, with a power-law index of 1.33-0.10+0.09 (1σ). The detailed systematics characterization in this work renders it the definitive weak lensing mass calibration for SDSS redMaPPer clusters at this time.
AB - We perform a measurement of the mass-richness relation of the redMaPPer galaxy cluster catalogue using weak lensing data from the Sloan Digital Sky Survey (SDSS). We have carefully characterized a broad range of systematic uncertainties, including shear calibration errors, photo-z biases, dilution by member galaxies, source obscuration, magnification bias, incorrect assumptions about cluster mass profiles, cluster centring, halo triaxiality and projection effects. We also compare measurements of the lensing signal from two independently produced shear and photometric redshift catalogues to characterize systematic errors in the lensing signal itself. Using a sample of 5570 clusters from 0.1 ≤ z ≤ 0.33, the normalization of our power-law mass versus λ relation is log10[M200m/h-1M⊙] = 14.344 ± 0.021 (statistical) ±0.023 (systematic) at a richness λ=40, a 7 per cent calibration uncertainty, with a power-law index of 1.33-0.10+0.09 (1σ). The detailed systematics characterization in this work renders it the definitive weak lensing mass calibration for SDSS redMaPPer clusters at this time.
KW - Galaxies: clusters: general
KW - Gravitational lensing: weak
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U2 - 10.1093/mnras/stw3250
DO - 10.1093/mnras/stw3250
M3 - Article
AN - SCOPUS:85018278139
SN - 0035-8711
VL - 466
SP - 3103
EP - 3118
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -