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Title: The DES Science Verification Weak Lensing Shear Catalogs

Journal Article · · Monthly Notices of the Royal Astronomical Society (Online)
DOI:https://doi.org/10.1093/mnras/stw990· OSTI ID:1223235
 [1]
  1. Univ. of Pennsylvania, Philadelphia, PA (United States). et al.

Here, we present weak lensing shear catalogues for 139 square degrees of data taken during the Science Verification (SV) time for the new Dark Energy Camera (DECam) being used for the Dark Energy Survey (DES). We also describe our object selection, point spread function estimation and shear measurement procedures using two independent shear pipelines, IM3SHAPE and NGMIX, which produce catalogues of 2.12 million and 3.44 million galaxies, respectively. Furthermore, we detail a set of null tests for the shear measurements and find that they pass the requirements for systematic errors at the level necessary for weak lensing science applications using the SV data. Finally, we discuss some of the planned algorithmic improvements that will be necessary to produce sufficiently accurate shear catalogues for the full 5-yr DES, which is expected to cover 5000 square degrees.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
DES Collaboration
Grant/Contract Number:
AC02-07CH11359; SC00112704; AC02-98CH10886; SC0007901; SC0007859
OSTI ID:
1223235
Alternate ID(s):
OSTI ID: 1336165
Report Number(s):
FERMILAB-PUB-15-309-AE; BNL-112730-2016-JA; arXiv eprint number arXiv:1507.05603; TRN: US1601624
Journal Information:
Monthly Notices of the Royal Astronomical Society (Online), Vol. 460, Issue 2; ISSN 1365-2966
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 124 works
Citation information provided by
Web of Science

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Galaxies in X-ray selected clusters and groups in Dark Energy Survey data – II. Hierarchical Bayesian modelling of the red-sequence galaxy luminosity function journal June 2019
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The Wendelstein Weak Lensing (WWL) pathfinder: accurate weak lensing masses for Planck clusters journal March 2019
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Beyond linear galaxy alignments journal November 2019
Integrated cosmological probes: Extended analysis journal April 2017
Looking through the same lens: Shear calibration for LSST, Euclid, and WFIRST with stage 4 CMB lensing journal June 2017
Dark Energy Survey year 1 results: Galaxy-galaxy lensing journal August 2018
Dark Energy Survey Year 1 results: Cosmological constraints from cosmic shear journal August 2018
Exploring the Brighter-fatter Effect with the Hyper Suprime-Cam journal May 2018
Practical Weak-lensing Shear Measurement with Metacalibration journal May 2017
Removing the Impact of Correlated PSF Uncertainties in Weak Lensing journal May 2018
Galaxy–Galaxy Weak-lensing Measurements from SDSS. II. Host Halo Properties of Galaxy Groups journal July 2018
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KiDS-450: Cosmological parameter constraints from tomographic weak gravitational lensing text January 2016
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Galaxies in X-ray Selected Clusters and Groups in Dark Energy Survey Data II: Hierarchical Bayesian Modeling of the Red-Sequence Galaxy Luminosity Function preprint January 2017
Exploring the brighter fatter effect with the Hyper Suprime-Cam text January 2017
Galaxy-galaxy weak-lensing measurement from SDSS: II. host halo properties of galaxy groups text January 2017
Removing the Impact of Correlated PSF Uncertainties in Weak Lensing text January 2017
Dark Energy Survey Year 1 Results: Weak Lensing Mass Calibration of redMaPPer Galaxy Clusters text January 2018
Radio Galaxy Shape Measurement with Hamiltonian Monte Carlo in the Visibility Domain text January 2018
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