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A new quadruply lensed quasar: SDSS J125107.57+293540.5
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|Title: ||A new quadruply lensed quasar: SDSS J125107.57+293540.5|
|Authors: ||Kayo, Issha|
Hall, Patrick B.
Kochanek, Christopher S.
Richards, Gordon T.
Schneider, Donald P.
York, Donald G.
|Keywords: ||Gravitational Lensing|
Quasars: Individual (Sdss J125107.57+293540.5)
|Issue Date: ||Oct-2007 |
|Publisher: ||University of Chicago Press|
|Citation: ||Astronomical Journal, 134(4): pp. 1515-1521.|
|Abstract: ||We report the discovery of a quadruply imaged quasar, SDSS J125107.57+293540.5, selected from the Sloan Digital
Sky Survey. Follow-up imaging reveals that the system consists of four blue pointlike components in a typical cusp lens
geometry surrounding a central red galaxy. The source redshift is 0.802, and the lens redshift is 0.410. The maximum
image separation between the lensed components is 1.7900. While the image configuration is well reproduced by
standard mass models with reasonable parameter values, the flux ratios predicted by these models differ from the observed
ratios in all bands. This is suggestive of small-scale structure in this lens, although a definitive identification of
the anomaly requires more accurate photometry and astrometry|
|Appears in Collections:||Faculty Research and Publications (Physics)|
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