Discovery of the Lensed Quasar System DES J0408-5354

H. Lin; Elizabeth J. Buckley-Geer; Adriano Agnello; Fernanda Ostrovski; R. G. McMahon; B. D. Nord; Nikolay Kuropatkin; Douglas L. Tucker; T. Treu; J. H. H. Chan; Sherry H. Suyu; H. Thomas Diehl; T. Collett; M. S. S. Gill; Anupreeta More; A. Amara; Matthew W. Auger; Frederic Courbin; Christopher D. Fassnacht; Josh Frieman; Philip J. Marshall; Georges Meylan; Cristian E. Rusu; Timothy M. C. Abbott; Filipe B. Abdalla; S. Allam; Manda Banerji; Keith Bechtol; A. Benoit-Lévy; Emmanuel Bertin; David Brooks; D. L. Burke; Aurelio Carnero Rosell; Matias Carrasco Kind; Jorge Carretero; Francisco Javier Castander; Martin Crocce; C. B. D'Andrea; Luiz A. N. da Costa; Sunali Desai; Jörg P. Dietrich; Tim F. Eifler; David A. Finley; Brenna Flaugher; Pablo Fosalba; J. García-Bellido; Enrique Gaztanaga; David W. Gerdes; Daniel A. Goldstein; D. Thomas; Dark Energy Survey Collaboration

doi:10.3847/2041-8213/aa624e

Discovery of the Lensed Quasar System DES J0408-5354

H. Lin, Elizabeth J. Buckley-Geer, Adriano Agnello, Fernanda Ostrovski, R. G. McMahon, B. D. Nord, Nikolay Kuropatkin, Douglas L. Tucker, T. Treu, J. H. H. Chan, Sherry H. Suyu, H. Thomas Diehl, T. Collett, M. S. S. Gill, Anupreeta More, A. Amara, Matthew W. Auger, Frederic Courbin, Christopher D. Fassnacht, Josh FriemanPhilip J. Marshall, Georges Meylan, Cristian E. Rusu, Timothy M. C. Abbott, Filipe B. Abdalla, S. Allam, Manda Banerji, Keith Bechtol, A. Benoit-Lévy, Emmanuel Bertin, David Brooks, D. L. Burke, Aurelio Carnero Rosell, Matias Carrasco Kind, Jorge Carretero, Francisco Javier Castander, Martin Crocce, C. B. D'Andrea, Luiz A. N. da Costa, Sunali Desai, Jörg P. Dietrich, Tim F. Eifler, David A. Finley, Brenna Flaugher, Pablo Fosalba, J. García-Bellido, Enrique Gaztanaga, David W. Gerdes, Daniel A. Goldstein, D. Thomas, Dark Energy Survey Collaboration

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Abstract

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.

Original language	English
Article number	L15
Journal	Astrophysical Journal Letters
Volume	838
DOIs	https://doi.org/10.3847/2041-8213/aa624e
Publication status	Published - 27 Mar 2017

Keywords

astro-ph.GA
astro-ph.CO
RCUK
STFC

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Discovery of the Lensed Quasar System DES J0408-5354
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Lin, H., Buckley-Geer, E. J., Agnello, A., Ostrovski, F., McMahon, R. G., Nord, B. D., Kuropatkin, N., Tucker, D. L., Treu, T., Chan, J. H. H., Suyu, S. H., Diehl, H. T., Collett, T., Gill, M. S. S., More, A., Amara, A., Auger, M. W., Courbin, F., Fassnacht, C. D., ... Dark Energy Survey Collaboration (2017). Discovery of the Lensed Quasar System DES J0408-5354. Astrophysical Journal Letters, 838, [L15]. https://doi.org/10.3847/2041-8213/aa624e

@article{722716bb1b9b430fa8c6f8d5476001b5,

title = "Discovery of the Lensed Quasar System DES J0408-5354",

abstract = "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.",

keywords = "astro-ph.GA, astro-ph.CO, RCUK, STFC",

author = "H. Lin and Buckley-Geer, {Elizabeth J.} and Adriano Agnello and Fernanda Ostrovski and McMahon, {R. G.} and Nord, {B. D.} and Nikolay Kuropatkin and Tucker, {Douglas L.} and T. Treu and Chan, {J. H. H.} and Suyu, {Sherry H.} and Diehl, {H. Thomas} and T. Collett and Gill, {M. S. S.} and Anupreeta More and A. Amara and Auger, {Matthew W.} and Frederic Courbin and Fassnacht, {Christopher D.} and Josh Frieman and Marshall, {Philip J.} and Georges Meylan and Rusu, {Cristian E.} and Abbott, {Timothy M. C.} and Abdalla, {Filipe B.} and S. Allam and Manda Banerji and Keith Bechtol and A. Benoit-L{\'e}vy and Emmanuel Bertin and David Brooks and Burke, {D. L.} and Rosell, {Aurelio Carnero} and Kind, {Matias Carrasco} and Jorge Carretero and Castander, {Francisco Javier} and Martin Crocce and D'Andrea, {C. B.} and Costa, {Luiz A. N. da} and Sunali Desai and Dietrich, {J{\"o}rg P.} and Eifler, {Tim F.} and Finley, {David A.} and Brenna Flaugher and Pablo Fosalba and J. Garc{\'i}a-Bellido and Enrique Gaztanaga and Gerdes, {David W.} and Goldstein, {Daniel A.} and D. Thomas and {Dark Energy Survey Collaboration}",

note = "9 pages, 4 figures, ",

year = "2017",

month = mar,

day = "27",

doi = "10.3847/2041-8213/aa624e",

language = "English",

volume = "838",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "IOP Publishing",

}

Lin, H, Buckley-Geer, EJ, Agnello, A, Ostrovski, F, McMahon, RG, Nord, BD, Kuropatkin, N, Tucker, DL, Treu, T, Chan, JHH, Suyu, SH, Diehl, HT, Collett, T, Gill, MSS, More, A, Amara, A, Auger, MW, Courbin, F, Fassnacht, CD, Frieman, J, Marshall, PJ, Meylan, G, Rusu, CE, Abbott, TMC, Abdalla, FB, Allam, S, Banerji, M, Bechtol, K, Benoit-Lévy, A, Bertin, E, Brooks, D, Burke, DL, Rosell, AC, Kind, MC, Carretero, J, Castander, FJ, Crocce, M, D'Andrea, CB, Costa, LAND, Desai, S, Dietrich, JP, Eifler, TF, Finley, DA, Flaugher, B, Fosalba, P, García-Bellido, J, Gaztanaga, E, Gerdes, DW, Goldstein, DA, Thomas, D & Dark Energy Survey Collaboration 2017, 'Discovery of the Lensed Quasar System DES J0408-5354', Astrophysical Journal Letters, vol. 838, L15. https://doi.org/10.3847/2041-8213/aa624e

TY - JOUR

T1 - Discovery of the Lensed Quasar System DES J0408-5354

AU - Lin, H.

AU - Buckley-Geer, Elizabeth J.

AU - Agnello, Adriano

AU - Ostrovski, Fernanda

AU - McMahon, R. G.

AU - Nord, B. D.

AU - Kuropatkin, Nikolay

AU - Tucker, Douglas L.

AU - Treu, T.

AU - Chan, J. H. H.

AU - Suyu, Sherry H.

AU - Diehl, H. Thomas

AU - Collett, T.

AU - Gill, M. S. S.

AU - More, Anupreeta

AU - Amara, A.

AU - Auger, Matthew W.

AU - Courbin, Frederic

AU - Fassnacht, Christopher D.

AU - Frieman, Josh

AU - Marshall, Philip J.

AU - Meylan, Georges

AU - Rusu, Cristian E.

AU - Abbott, Timothy M. C.

AU - Abdalla, Filipe B.

AU - Allam, S.

AU - Banerji, Manda

AU - Bechtol, Keith

AU - Benoit-Lévy, A.

AU - Bertin, Emmanuel

AU - Brooks, David

AU - Burke, D. L.

AU - Rosell, Aurelio Carnero

AU - Kind, Matias Carrasco

AU - Carretero, Jorge

AU - Castander, Francisco Javier

AU - Crocce, Martin

AU - D'Andrea, C. B.

AU - Costa, Luiz A. N. da

AU - Desai, Sunali

AU - Dietrich, Jörg P.

AU - Eifler, Tim F.

AU - Finley, David A.

AU - Flaugher, Brenna

AU - Fosalba, Pablo

AU - García-Bellido, J.

AU - Gaztanaga, Enrique

AU - Gerdes, David W.

AU - Goldstein, Daniel A.

AU - Thomas, D.

AU - Dark Energy Survey Collaboration

N1 - 9 pages, 4 figures,

PY - 2017/3/27

Y1 - 2017/3/27

N2 - 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.

AB - 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.

KW - astro-ph.GA

KW - astro-ph.CO

KW - RCUK

KW - STFC

U2 - 10.3847/2041-8213/aa624e

DO - 10.3847/2041-8213/aa624e

M3 - Article

SN - 2041-8205

VL - 838

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

M1 - L15

ER -

Discovery of the Lensed Quasar System DES J0408-5354

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