Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues

Y. Zhang; T. Jeltema; D. L. Hollowood; S. Everett; E. Rozo; A. Farahi; A. Bermeo; S. Bhargava; P. Giles; A. K. Romer; R. Wilkinson; E. S. Rykoff; A. Mantz; H. T. Diehl; A. E. Evrard; C. Stern; D. Gruen; A. von der Linden; M. Splettstoesser; X. Chen; M. Costanzi; S. Allen; C. Collins; M. Hilton; M. Klein; R. G. Mann; M. Manolopoulou; G. Morris; J. Mayers; Martin Sahlén; J. Stott; C. Vergara Cervantes; P. T. P. Viana; R. H. Wechsler; S. Allam; S. Avila; K. Bechtol; E. Bertin; D. Brooks; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; F. J. Castander; L. N. da Costa; J. De Vicente; S. Desai; J. P. Dietrich; P. Doel; B. Flaugher; P. Fosalba; J. Frieman; J. Garcia-Bellido; E. Gaztanaga; R. A. Gruendl; J. Gschwend; G. Gutierrez; W. G. Hartley; K. Honscheid; B. Hoyle; E. Krause; K. Kuehn; N. Kuropatkin; M. Lima; M. A. G. Maia; J. L. Marshall; P. Melchior; F. Menanteau; C. J. Miller; R. Miquel; R. L. C. Ogando; A. A. Plazas; E. Sanchez; V. Scarpine; R. Schindler; S. Serrano; I. Sevilla-Noarbe; M. Smith; M. Soares-Santos; E. Suchyta; M. E. C. Swanson; G. Tarle; D. Thomas; D. L. Tucker; V. Vikram; W. Wester; DES Collaboration

doi:10.1093/mnras/stz1361

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Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues

Journal article

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Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues

Y. Zhang, T. Jeltema, D. L. Hollowood, S. Everett, E. Rozo, A. Farahi, A. Bermeo, S. Bhargava, P. Giles, A. K. Romer, …

Monthly notices of the Royal Astronomical Society, Vol.487(2), pp.2578-2593

08/01/2019

DOI: https://doi.org/10.1093/mnras/stz1361

Abstract

dark energy

galaxies: clusters: general

X-rays: galaxies: clusters

The centre determination of a galaxy cluster from an optical cluster finding algorithm can be offset from theoretical prescriptions or N-body definitions of its host halo centre. These offsets impact the recovered cluster statistics, affecting both richness measurements and the weak lensing shear profile around the clusters. This paper models the centring performance of the redMaPPer cluster finding algorithm using archival X-ray observations of redMaPPer-selected clusters. Assuming the X-ray emission peaks as the fiducial halo centres, and through analysing their offsets to the redMaPPer centres, we find that similar to 75 +/- 8 per cent of the redMaPPer clusters are well centred and the mis-centred offset follows a Gamma distribution in normalized, projected distance. These mis-centring offsets cause a systematic underestimation of cluster richness relative to the well-centred clusters, for which we propose a descriptive model. Our results enable the DES Y1 cluster cosmology analysis by characterizing the necessary corrections to both the weak lensing and richness abundance functions of the DES Y1 redMaPPer cluster catalogue.

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Title: Dark Energy Surveyed Year 1 results
Creators: Y. Zhang - Fermi National Accelerator Laboratory
T. Jeltema - Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
D. L. Hollowood - University of California, Santa Cruz
S. Everett - Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
E. Rozo - University of Arizona
A. Farahi - University of Michigan
A. Bermeo - University of Sussex
S. Bhargava - University of Sussex
P. Giles - Univ Sussex, Dept Phys & Astron, Pevensey Bldg, Brighton BN1 9QH, E Sussex, England
A. K. Romer - University of Sussex
R. Wilkinson - University of Sussex
E. S. Rykoff - Kavli Institute for Particle Astrophysics and Cosmology
A. Mantz - Stanford University
H. T. Diehl - Fermi National Accelerator Laboratory
A. E. Evrard - University of Michigan
C. Stern - Ludwig Maximilians Univ Munchen, Fac Phys, Scheinerstr 1, D-81679 Munich, Germany
D. Gruen - Stanford University
A. von der Linden - Stony Brook University
M. Splettstoesser - University of Sussex
X. Chen - University of Michigan
M. Costanzi - Institute for Fundamental Physics of the Universe
S. Allen - Stanford University
C. Collins - Liverpool John Moores University
M. Hilton - Univ KwaZulu Natal, Astrophys & Cosmol Res Unit, Sch Math Stat & Comp Sci, Westville Campus, ZA-4041 Durban, South Africa
M. Klein - Max Planck Institute for Extraterrestrial Physics
R. G. Mann - Univ Edinburgh, Royal Observ, Inst Astron, Blackford Hill, Edinburgh EH9 3NJ, Midlothian, Scotland
M. Manolopoulou - University of Edinburgh
G. Morris - SLAC National Accelerator Laboratory
J. Mayers - Univ Sussex, Dept Phys & Astron, Pevensey Bldg, Brighton BN1 9QH, E Sussex, England
Martin Sahlén - Observationell astrofysik
J. Stott
C. Vergara Cervantes - University of Sussex
P. T. P. Viana
R. H. Wechsler - Kavli Institute for Particle Astrophysics and Cosmology
S. Allam - Fermi National Accelerator Laboratory
S. Avila - University of Portsmouth
K. Bechtol - University of Wisconsin–Madison
E. Bertin - Centre National de la Recherche Scientifique
D. Brooks - University College London
D. L. Burke - Kavli Institute for Particle Astrophysics and Cosmology
A. Carnero Rosell
M. Carrasco Kind - National Center for Supercomputing Applications
J. Carretero - Institute for High Energy Physics
F. J. Castander - Institut d'Estudis Espacials de Catalunya
L. N. da Costa - Laboratório Interinstitucional de e-Astronomia
J. De Vicente - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
S. Desai - Indian Institute of Technology Hyderabad
J. P. Dietrich - Excellence Cluster Origins
P. Doel - University College London
B. Flaugher - Fermi National Accelerator Laboratory
P. Fosalba - Institut d'Estudis Espacials de Catalunya
J. Frieman - Fermi National Accelerator Laboratory
J. Garcia-Bellido - Universidad Autónoma de Madrid
E. Gaztanaga - Institut d'Estudis Espacials de Catalunya
R. A. Gruendl - National Center for Supercomputing Applications
J. Gschwend - Laboratório Interinstitucional de e-Astronomia
G. Gutierrez - Fermi National Accelerator Laboratory
W. G. Hartley - ETH Zurich
K. Honscheid - The Ohio State University
B. Hoyle - Ludwig-Maximilians-Universität München
E. Krause - Steward Observ, Dept Astron, 933 North Cherry Ave, Tucson, AZ 85721 USA
K. Kuehn - Australian Astronomical Observatory
N. Kuropatkin - Fermi National Accelerator Laboratory
M. Lima - Laboratório Interinstitucional de e-Astronomia
M. A. G. Maia - Laboratório Interinstitucional de e-Astronomia
J. L. Marshall - Mitchell Institute
P. Melchior - Princeton University
F. Menanteau - National Center for Supercomputing Applications
C. J. Miller - University of Michigan
R. Miquel - Lawrence Berkeley National Laboratory
R. L. C. Ogando - Laboratório Interinstitucional de e-Astronomia
A. A. Plazas - Princeton University
E. Sanchez - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
V. Scarpine - Fermi National Accelerator Laboratory
R. Schindler - SLAC National Accelerator Laboratory
S. Serrano - Institute of Space Sciences
I. Sevilla-Noarbe - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
M. Smith - University of Southampton
M. Soares-Santos - Brandeis University, Martin A. Fisher School of Physics
E. Suchyta - Oak Ridge National Laboratory
M. E. C. Swanson - National Center for Supercomputing Applications
G. Tarle - University of Michigan
D. Thomas - University of Portsmouth
D. L. Tucker - Fermi National Accelerator Laboratory
V. Vikram - Argonne National Laboratory
W. Wester - Fermi National Accelerator Laboratory
DES Collaboration
Publication Details: Monthly notices of the Royal Astronomical Society, Vol.487(2), pp.2578-2593
Identifiers: 9924552844701921
Academic Unit: Martin A. Fisher School of Physics
Language: English
Resource Type: Journal article

Dark Energy Surveyed Year 1 results: calibration of cluster mis-centring in the redMaPPer catalogues

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