Discovery of Four Gravitationally Lensed Quasars from the Sloan Digital Sky Survey

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dc.creatorOguri, Masamune
dc.creatorInada, Naohisa
dc.creatorClocchiatti, Alejandro
dc.creatorKayo, Issha
dc.creatorShin, Min-Su
dc.creatorHennawi, Joseph F.
dc.creatorStrauss, Michael A.
dc.creatorMorokuma, Tomoki
dc.creatorSchneider, Donald P.
dc.creatorYork, Donald G.
dc.date2007-08-07
dc.date2007-11-25
dc.date.accessioned2026-07-07T11:41:43Z
dc.date.available2026-07-07T11:41:43Z
dc.descriptionWe present the discovery of four gravitationally lensed quasars selected from the spectroscopic quasar catalog of the Sloan Digital Sky Survey. We describe imaging and spectroscopic follow-up observations that support the lensing interpretation of the following four quasars: SDSS J0832+0404 (image separation θ=1.98", source redshift z_s=1.115, lens redshift z_l=0.659); SDSS J1216+3529 (θ=1.49", z_s=2.012); SDSS J1322+1052 (θ=2.00", z_s=1.716); and SDSS J1524+4409 (θ=1.67", z_s=1.210, z_l=0.320). Each system has two lensed images. We find that the fainter image component of SDSS J0832+0404 is significantly redder than the brighter component, perhaps because of differential reddening by the lensing galaxy. The lens potential of SDSS J1216+3529 might be complicated by the presence of a secondary galaxy near the main lensing galaxy.
dc.description25 pages, 10 figures, 6 tables, accepted for publication in AJ
dc.identifierhttps://arxiv.org/abs/0708.0871
dc.identifierhttp://arxiv.org/abs/0708.0871
dc.identifierAstron.J.135:520-526,2008
dc.identifierdoi:10.1088/0004-6256/135/2/520
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200636
dc.subjectAstrophysics
dc.titleDiscovery of Four Gravitationally Lensed Quasars from the Sloan Digital Sky Survey
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