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, Donald G. York

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)1973-1980
Number of pages8
JournalMonthly Notices of the Royal Astronomical Society
Issue number4
StatePublished - Dec 2008

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Gravitational lensing
  • Quasars: individual: SDSS J133018.65+181032.1


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