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SDSS J094604.90+183541.8: A gravitationally lensed quasar at z = 4.8

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dc.contributor.authorMcGreer, Ian
dc.contributor.authorHall, P B
dc.contributor.authorFan, Xiaohui
dc.contributor.authorBian, Fuyan
dc.contributor.authorInada, Naohisa
dc.contributor.authorOguri, Masamune
dc.contributor.authorStrauss, Michael A
dc.contributor.authorSchneider, Donald
dc.contributor.authorFarnsworth, Kara
dc.date.accessioned2015-12-13T22:17:56Z
dc.date.issued2010
dc.date.updated2016-02-24T10:02:43Z
dc.description.abstractWe report the discovery of a gravitationally lensed quasar identified serendipitously in the Sloan Digital Sky Survey (SDSS). The object, SDSS J094604.90+183541.8, was initially targeted for spectroscopy as a luminous red galaxy, but the SDSS spectrum has the features of both a z = 0.388 galaxy and a z = 4.8 quasar. We have obtained additional imaging that resolves the system into two quasar images separated by 3'.'06 and a bright galaxy that is strongly blended with one of the quasar images. We confirm spectroscopically that the two quasar images represent a single-lensed source at z = 4.8 with a total magnification of 3.2, and we derive a model for the lensing galaxy. This is the highest redshift lensed quasar currently known. We examine the issues surrounding the selection of such an unusual object from existing data and briefly discuss implications for lensed quasar surveys.
dc.identifier.issn0004-6256
dc.identifier.urihttp://hdl.handle.net/1885/71390
dc.publisherUniversity of Chicago Press
dc.sourceAstronomical Journal
dc.subjectKeywords: Gravitational lensing: Micro; Gravitational lensing: Strong; Quasars: Individual (SDSS J094604.90+183541.8)
dc.titleSDSS J094604.90+183541.8: A gravitationally lensed quasar at z = 4.8
dc.typeJournal article
local.bibliographicCitation.issue2
local.bibliographicCitation.lastpage378
local.bibliographicCitation.startpage370
local.contributor.affiliationMcGreer, Ian, University of Arizona
local.contributor.affiliationHall, P B, York University
local.contributor.affiliationFan, Xiaohui, University of Arizona
local.contributor.affiliationBian, Fuyan, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationInada, Naohisa, RIKEN
local.contributor.affiliationOguri, Masamune, National Astronomical Observatory of Japan
local.contributor.affiliationStrauss, Michael A, Princeton University
local.contributor.affiliationSchneider, Donald, Pennsylvania State University
local.contributor.affiliationFarnsworth, Kara, University of Arizona
local.contributor.authoruidBian, Fuyan, u5398920
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.identifier.absfor020103 - Cosmology and Extragalactic Astronomy
local.identifier.ariespublicationU3488905xPUB2690
local.identifier.citationvolume140
local.identifier.doi10.1088/0004-6256/140/2/370
local.identifier.scopusID2-s2.0-78049288285
local.type.statusPublished Version

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