SDSS J1029+2623: A Gravitationally Lensed Quasar with an Image Separation of 22."5 | Zendy

Naohisa Inada | Zendy; Masamune Oguri | Zendy; Tomoki Morokuma | Zendy; Mamoru Doi | Zendy; Naoki Yasuda | Zendy; R. H. Becker | Zendy; Gordon T. Richards | Zendy; C. S. Kochanek | Zendy; Issha Kayo | Zendy; K. Konishi | Zendy; Hiroyuki Utsunomiya | Zendy; MinSu Shin | Zendy; Michael A. Strauss | Zendy; E. Sheldon | Zendy; Donald G. York | Zendy; Joseph F. Hennawi | Zendy; Donald P. Schneider | Zendy; Xinyu Dai | Zendy; M. Fukugita | Zendy

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SDSS J1029+2623: A Gravitationally Lensed Quasar with an Image Separation of 22."5

Author(s) -

Naohisa Inada,

Masamune Oguri,

Tomoki Morokuma,

Mamoru Doi,

Naoki Yasuda,

R. H. Becker,

Gordon T. Richards,

C. S. Kochanek,

Issha Kayo,

K. Konishi,

Hiroyuki Utsunomiya,

MinSu Shin,

Michael A. Strauss,

E. Sheldon,

Donald G. York,

Joseph F. Hennawi,

Donald P. Schneider,

Xinyu Dai,

M. Fukugita

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/510671

Subject(s) - quasar , sky , astrophysics , physics , galaxy , cluster (spacecraft) , gravitational lens , lens (geology) , astronomy , redshift , optics , computer science , programming language

We report the discovery of a cluster-scale lensed quasar, SDSS J1029+2623,selected from the Sloan Digital Sky Survey. The lens system exhibits two lensedimages of a quasar at z_s=2.197. The image separation of 22.5" makes it thelargest separation lensed quasar discovered to date. The similarity of theoptical spectra and the radio loudnesses of the two components support thelensing hypothesis. Images of the field show a cluster of galaxies at z_l~0.55that is responsible for the large image separation. The lensed images and thecluster light center are not collinear, which implies that the lensing clusterhas a complex structure.Comment: 5 pages, 4 figures. Accepted for publication in ApJ Letter

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