publication . Article . Preprint . 2019

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

Y. Zhang; Tesla Jeltema; D. L. Hollowood; S. Everett; E. Rozo; Arya Farahi; A. Bermeo; Sunayana Bhargava; P. Giles; A. K. Romer; ...
Open Access English
  • Published: 01 Aug 2019
  • Publisher: HAL CCSD
The center 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 center. These offsets impact the recovered cluster statistics, affecting both richness measurements and the weak lensing shear profile around the clusters. This paper models the centering performance of the \RM~cluster finding algorithm using archival X-ray observations of \RM-selected clusters. Assuming the X-ray emission peaks as the fiducial halo centers, and through analyzing their offsets to the \RM~centers, we find that $\sim 75\pm 8 \%$ of the \RM~clusters are well centered and the mis...
Persistent Identifiers
arXiv: Astrophysics::Cosmology and Extragalactic Astrophysics
free text keywords: X-rays: galaxies: clusters, dark energy, galaxies: clusters: general, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, QB, Space and Planetary Science, Astronomy and Astrophysics, Research council, Library science, National laboratory, Astronomy observatory, Christian ministry, European research, Physics, European union, media_common.cataloged_instance, media_common, Fundamental physics
Related Organizations
Funded by
UKRI| STFC Sussex 2015 DTP
  • Funder: UK Research and Innovation (UKRI)
  • Project Code: ST/N504452/1
  • Funding stream: STFC
Understanding the Origin of Cosmic Structure
  • Funder: European Commission (EC)
  • Project Code: 306478
  • Funding stream: FP7 | SP2 | ERC
Testing the Dark Energy Paradigm and Measuring Neutrino Mass with the Dark Energy Survey
  • Funder: European Commission (EC)
  • Project Code: 291329
  • Funding stream: FP7 | SP2 | ERC
NSF| Collaborative Research: The Dark Energy Survey Data Management Operations
  • Funder: National Science Foundation (NSF)
  • Project Code: 1138766
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
Capitalizing on Gravitational Shear
  • Funder: European Commission (EC)
  • Project Code: 240672
  • Funding stream: FP7 | SP2 | ERC
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