SDSS J115517.35+634622.0: A Newly Discovered Gravitationally Lensed Quasar | Zendy

Bart Pindor | Zendy; Daniel J. Eisenstein | Zendy; Naohisa Inada | Zendy; Michael D. Gregg | Zendy; R. H. Becker | Zendy; J. Brinkmann | Zendy; Scott Burles | Zendy; Joshua A. Frieman | Zendy; David E. Johnston | Zendy; Gordon T. Richards | Zendy; Donald P. Schneider | Zendy; Ryan Scranton | Zendy; M. Sekiguchi | Zendy; Edwin L. Turner | Zendy; Donald G. York | Zendy

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SDSS J115517.35+634622.0: A Newly Discovered Gravitationally Lensed Quasar

Author(s) -

Bart Pindor,

Daniel J. Eisenstein,

Naohisa Inada,

Michael D. Gregg,

R. H. Becker,

J. Brinkmann,

Scott Burles,

Joshua A. Frieman,

David E. Johnston,

Gordon T. Richards,

Donald P. Schneider,

Ryan Scranton,

M. Sekiguchi,

Edwin L. Turner,

Donald G. York

Publication year - 2004

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/381904

Subject(s) - quasar , physics , astrophysics , galaxy , sky , redshift , lens (geology) , gravitational lens , astronomy , optics

We report the discovery of SDSSJ115517.35+634622.0, a previously unknowngravitationally lensed quasar. The lens system exhibits two images of a $z =2.89$ quasar, with an image separation of $1{\farcs}832 \pm 0.007$ . Near-IRimaging of the system reveals the presence of the lensing galaxy between thetwo quasar images. Based on absorption features seen in the Sloan Digital SkySurvey (SDSS) spectrum, we determine a lens galaxy redshift of $z = 0.1756$.The lens is rather unusual in that one of the quasar images is only$0{\farcs}22\pm0{\farcs}07$ ($\sim 0.1 R_{\rm eff}$) from the center of thelens galaxy and photometric modeling indicates that this image is significantlybrighter than predicted by a SIS model. This system was discovered in thecourse of an ongoing search for strongly lensed quasars in the dataset from theSDSS.Comment: 18 pages, 6 figures. Accepted for publication in A

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