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  4. Discovery of the Lensed Quasar System DES J0408-5354
 
research article

Discovery of the Lensed Quasar System DES J0408-5354

Lin, H.
•
Buckley-Geer, E.
•
Agnello, A.
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2017
The Astrophysical Journal Letters

We report the discovery and spectroscopic confirmation of the quad-like lensed quasar system DES J0408-5354 found in the Dark Energy Survey (DES) Year 1 (Y1) data. This system was discovered during a search for DES Y1 strong lensing systems using a method that identified candidates as red galaxies with multiple blue neighbors. DES J0408-5354 consists of a central red galaxy surrounded by three bright (i < 20) blue objects and a fourth red object. Subsequent spectroscopic observations using the Gemini South telescope confirmed that the three blue objects are indeed the lensed images of a quasar with redshift z = 2.375, and that the central red object is an early-type lensing galaxy with redshift z = 0.597. DES J0408-5354 is the first quad lensed quasar system to be found in DES and begins to demonstrate the potential of DES to discover and dramatically increase the sample size of these very rare objects.

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Type
research article
DOI
10.3847/2041-8213/aa624e
Web of Science ID

WOS:000397955700001

Author(s)
Lin, H.
Buckley-Geer, E.
Agnello, A.
Ostrovski, F.
Mcmahon, R. G.
Nord, B.
Kuropatkin, N.
Tucker, D. L.
Treu, T.
Chan, J. H. H.
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Corporate authors
DES Collaboration
Date Issued

2017

Publisher

Iop Publishing Ltd

Published in
The Astrophysical Journal Letters
Volume

838

Issue

2

Start page

L15

Subjects

gravitational lensing: strong

•

quasars: general

•

surveys

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LASTRO  
Available on Infoscience
May 1, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/136768
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