Journal Article

Mass models and environment of the new quadruply lensed quasar SDSS J1330+1810*

Masamune Oguri, Naohisa Inada, Jeffrey A. Blackburne, Min-Su Shin, Issha Kayo, Michael A. Strauss, Donald P. Schneider and Donald G. York

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 391, issue 4, pages 1973-1980
Published in print December 2008 | ISSN: 0035-8711
Published online December 2008 | e-ISSN: 1365-2966 | DOI:
Mass models and environment of the new quadruply lensed quasar SDSS J1330+1810*

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We present the discovery of a new quadruply lensed quasar. The lens system, SDSS J1330+1810 at zs= 1.393, was identified as a lens candidate from the spectroscopic sample of the Sloan Digital Sky Survey. Optical and near-infrared images clearly show four quasar images with a maximum image separation of 1.76 arcsec, as well as a bright lensing galaxy. We measure a redshift of the lensing galaxy of zl= 0.373 from absorption features in the spectrum. We find a foreground group of galaxies at z= 0.31, centred at ∼120 arcsec south-west of the lens system. Simple mass models fit the data quite well, including the flux ratios between images, although the lens galaxy appears to be ∼1 mag brighter than expected by the Faber–Jackson relation. Our mass modelling suggests that shear from nearby structure is affecting the lens potential.

Keywords: gravitational lensing; quasars: individual: SDSS J133018.65+181032.1

Journal Article.  5079 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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