Discovery of the Lensed Quasar System DES J0408-5354
- 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.
- Suyu, S.H.
- Diehl, H.T.
- Collett, T.
- Gill, M.S.S.
- More, A.
- Amara, A.
- Auger, M.W.
- Courbin, F.
- Fassnacht, C.D.
- Frieman, J.
- Marshall, P.J.
- Meylan, G.
- Rusu, C.E.
- Abbott, T.M.C.
- Abdalla, F.B.
- Allam, S.
- Banerji, M.
- Bechtol, K.
- Benoit-Lévy, A.
- Bertin, E.
- Brooks, D.
- Burke, D.L.
- Carnero Rosell, A.
- Carrasco Kind, M.
- Carretero, J.
- Castander, F.J.
- Crocce, M.
- D'Andrea, C.B.
- Da Costa, L.N.
- Desai, S.
- Dietrich, J.P.
- Eifler, T.F.
- Finley, D.A.
- Flaugher, B.
- Fosalba, P.
- García-Bellido, J.
- Gaztanaga, E.
- Gerdes, D.W.
- Goldstein, D.A.
- Gruen, D.
- Gruendl, R.A.
- Gschwend, J.
- Gutierrez, G.
- Honscheid, K.
- James, D.J.
- Kuehn, K.
- Lahav, O.
- Li, T.S.
- Lima, M.
- Maia, M.A.G.
- March, M.
- Marshall, J.L.
- Martini, P.
- Melchior, P.
- Menanteau, F.
- Miquel, R.
- Ogando, R.L.C.
- Plazas, A.A.
- Romer, A.K.
- Sanchez, E.
- Schindler, R.
- Schubnell, M.
- Sevilla-Noarbe, I.
- Smith, M.
- Smith, R.C.
- Sobreira, F.
- Suchyta, E.
- Swanson, M.E.C.
- Tarle, G.
- Thomas, D.
- Walker, A.R.
DOIAbstract
International audienceWe 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 ($i\lt 20$) 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-...
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