TY - JOUR
T1 - Mass models and environment of the new quadruply lensed quasar SDSS J1330+1810
AU - Oguri, Masamune
AU - Inada, Naohisa
AU - Blackburne, Jeffrey A.
AU - Shin, Min Su
AU - Kayo, Issha
AU - Strauss, Michael A.
AU - Schneider, Donald P.
AU - York, Donald G.
PY - 2008/12
Y1 - 2008/12
N2 - 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.
AB - 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.
KW - Gravitational lensing
KW - Quasars: individual: SDSS J133018.65+181032.1
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U2 - 10.1111/j.1365-2966.2008.14032.x
DO - 10.1111/j.1365-2966.2008.14032.x
M3 - Article
AN - SCOPUS:57649090230
SN - 0035-8711
VL - 391
SP - 1973
EP - 1980
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -