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Title: The DES Bright Arcs Survey: Hundreds of Candidate Strongly Lensed Galaxy Systems from the Dark Energy Survey Science Verification and Year 1 Observations

Journal Article · · The Astrophysical Journal. Supplement Series (Online)
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In this paper, we report the results of searches for strong gravitational lens systems in the Dark Energy Survey (DES) Science Verification and Year 1 observations. The Science Verification data span approximately 250 sq. deg. with a median i-band limiting magnitude for extended objects (10σ) of 23.0. The Year 1 data span approximately 2000 sq. deg. and have an i-band limiting magnitude for extended objects (10σ) of 22.9. As these data sets are both wide and deep, they are particularly useful for identifying strong gravitational lens candidates. Potential strong gravitational lens candidate systems were initially identified based on a color and magnitude selection in the DES object catalogs or because the system is at the location of a previously identified galaxy cluster. Cutout images of potential candidates were then visually scanned using an object viewer and numerically ranked according to whether or not we judged them to be likely strong gravitational lens systems. Having scanned nearly 400,000 cutouts, we present 374 candidate strong lens systems, of which 348 are identified for the first time. Finally, we provide the R.A. and decl., the magnitudes and photometric properties of the lens and source objects, and the distance (radius) of the source(s) from the lens center for each system.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
DES Collaboration
Grant/Contract Number:
SC0012704; AC02-07CH11359; AC02-05CH11231
OSTI ID:
1412737
Alternate ID(s):
OSTI ID: 1362062; OSTI ID: 1417609
Report Number(s):
BNL-114558-2017-JA; FERMILAB-PUB-17-138-PPD; TRN: US1800336
Journal Information:
The Astrophysical Journal. Supplement Series (Online), Vol. 232, Issue 1; ISSN 1538-4365
Publisher:
American Astronomical Society/IOPCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 42 works
Citation information provided by
Web of Science

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VDES J2325-5229 a z=2.7 gravitationally lensed quasar discovered using morphology independent supervised machine learning text January 2016
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Cited By (16)

Strong gravitational lensing of explosive transients journal November 2019
Evidence for radial variations in the stellar mass-to-light ratio of massive galaxies from weak and strong lensing journal August 2018
Is every strong lens model unhappy in its own way? Uniform modelling of a sample of 13 quadruply+ imaged quasars journal December 2018
LinKS: discovering galaxy-scale strong lenses in the Kilo-Degree Survey using convolutional neural networks journal January 2019
Quasar lenses in the south: searches over the DES public footprint journal August 2019
Finding high-redshift strong lenses in DES using convolutional neural networks journal January 2019
The energy dependence of micro black hole horizon in quantum gravity theory journal August 2019
The Importance of Secondary Halos for Strong Lensing in Massive Galaxy Clusters across Redshift journal June 2019
An Extended Catalog of Galaxy–Galaxy Strong Gravitational Lenses Discovered in DES Using Convolutional Neural Networks journal July 2019
Evidence for radial variations in the stellar mass-to-light ratio of massive galaxies from weak and strong lensing text January 2018
Quasar Lenses in the South: searches over the DES public footprint text January 2018
Is every strong lens model unhappy in its own way? Uniform modelling of a sample of 13 quadruply+ imaged quasars text January 2018
The importance of secondary halos for strong lensing in massive galaxy clusters across redshift text January 2018
Finding high-redshift strong lenses in DES using convolutional neural networks text January 2018
LinKS: Discovering galaxy-scale strong lenses in the Kilo-Degree Survey using Convolutional Neural Networks text January 2018
Strong gravitational lensing of explosive transients text January 2019

Linked Research (1)

Figures / Tables (26)

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
high-redshift galaxies
strong gravitational lensing