A new quadruply lensed quasar: SDSS J125107.57+293540.5

Issha Kayo; Naohisa Inada; Masamune Oguri; Patrick B. Hall; Christopher S. Kochanek; Gordon T. Richards; Donald P. Schneider; Donald G. York; Pan Kaike

doi:10.1086/521652

A new quadruply lensed quasar: SDSS J125107.57+293540.5

Issha Kayo, Naohisa Inada, Masamune Oguri, Patrick B. Hall, Christopher S. Kochanek, Gordon T. Richards, Donald P. Schneider, Donald G. York, Pan Kaike

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

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 1.79″. 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.

Original language	English (US)
Pages (from-to)	1515-1521
Number of pages	7
Journal	Astronomical Journal
Volume	134
Issue number	4
DOIs	https://doi.org/10.1086/521652
State	Published - 2007

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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title = "A new quadruply lensed quasar: SDSS J125107.57+293540.5",

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 1.79″. 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.",

author = "Issha Kayo and Naohisa Inada and Masamune Oguri and Hall, {Patrick B.} and Kochanek, {Christopher S.} and Richards, {Gordon T.} and Schneider, {Donald P.} and York, {Donald G.} and Pan Kaike",

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T1 - A new quadruply lensed quasar

T2 - SDSS J125107.57+293540.5

AU - Kayo, Issha

AU - Inada, Naohisa

AU - Oguri, Masamune

AU - Hall, Patrick B.

AU - Kochanek, Christopher S.

AU - Richards, Gordon T.

AU - Schneider, Donald P.

AU - York, Donald G.

AU - Kaike, Pan

PY - 2007

Y1 - 2007

N2 - 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 1.79″. 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.

AB - 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 1.79″. 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.

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A new quadruply lensed quasar: SDSS J125107.57+293540.5

Abstract

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