2017ApJ...838L..15L

Query : 2017ApJ...838L..15L

2017ApJ...838L..15L - Astrophys. J., 838, L15-L15 (2017/April-1)

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-LEVY 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., GARCIA-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. (The DES Collaboration)

Abstract (from CDS):

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.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): gravitational lensing: strong - quasars: general - surveys - surveys

Nomenclature: Fig. 1, Table 1: [ALB2017] DES J0408-5354 AN (No. G0) added.

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [ALB2017] DES J0408-5354 G2 G 04 08 21.49 -53 54 00.3           ~ 3 0
2 [ALB2017] DES J0408-5354 C LeQ 04 08 21.49 -53 54 00.3           ~ 3 0
3 [ALB2017] DES J0408-5354 B LeQ 04 08 21.49 -53 53 59.2           ~ 5 0
4 [ALB2017] DES J0408-5354 source QSO 04 08 21.70 -53 53 59.6           ~ 7 0
5 [ALB2017] DES J0408-5354 G1 G 04 08 21.70 -53 53 59.6           ~ 6 0
6 [ALB2017] DES J0408-5354 gLS 04 08 21.70 -53 53 59.6           ~ 37 0
7 [ALB2017] DES J0408-5354 D LeQ 04 08 21.71 -53 53 58.1           ~ 5 0
8 [ALB2017] DES J0408-5354 G0 G 04 08 21.83 -53 54 05.9           ~ 3 0
9 [ALB2017] DES J0408-5354 A LeQ 04 08 21.9440821536 -53 54 00.873496512           ~ 5 0

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