The Dark Energy Survey Bright Arcs Survey: Candidate Strongly Lensed Galaxy Systems from the Dark Energy Survey 5000 Square Degree Footprint
Authors
Bechtol, K
Martin, J
Allam, S
Andrade-Oliveira, F
Dietrich, JP
Everett, S
Pereira, MES
Scarpine, V
Serrano, S
Varga, TN
Publication Date
2022-03-01Journal Title
The Astrophysical Journal Supplement Series
ISSN
0067-0049
Publisher
American Astronomical Society
Volume
259
Issue
1
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
O’Donnell, J., Wilkinson, R., Diehl, H., Aros-Bunster, C., Bechtol, K., Birrer, S., Buckley-Geer, E., et al. (2022). The Dark Energy Survey Bright Arcs Survey: Candidate Strongly Lensed Galaxy Systems from the Dark Energy Survey 5000 Square Degree Footprint. The Astrophysical Journal Supplement Series, 259 (1) https://doi.org/10.3847/1538-4365/ac470b
Abstract
<jats:title>Abstract</jats:title>
<jats:p>We report the combined results of eight searches for strong gravitational lens systems in the full 5000 square degrees of Dark Energy Survey (DES) observations. The observations accumulated by the end of the third observing season fully covered the DES footprint in five filters (<jats:italic>grizY</jats:italic>), with an <jats:italic>i</jats:italic>-band limiting magnitude (at 10<jats:italic>σ</jats:italic>) of 23.44. In four searches, a list of potential candidates was identified using a color and magnitude selection from the object catalogs created from the first three observing seasons. Three other searches were conducted at the locations of previously identified galaxy clusters. Cutout images of potential candidates were then visually scanned using an object viewer. An additional set of candidates came from a data-quality check of a subset of the color–coadd tiles created from the full DES six-season data set. A short list of the most promising strong-lens candidates was then numerically ranked according to whether or not we judged them to be bona fide strong gravitational lens systems. These searches discovered a diverse set of 247 strong-lens candidate systems, of which 81 are identified for the first time. We provide the coordinates, magnitudes, and photometric properties of the lens and source objects, and an estimate of the Einstein radius for 81 new systems and 166 previously reported systems. This catalog will be of use for selecting interesting systems for detailed follow up, studies of galaxy cluster and group mass profiles, as well as a training/validation set for automated strong-lens searches.</jats:p>
Keywords
310, Galaxies and Cosmology
Identifiers
apjsac470b, ac470b, aas35206
External DOI: https://doi.org/10.3847/1538-4365/ac470b
This record's URL: https://www.repository.cam.ac.uk/handle/1810/334836
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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