A new gravitational lens from the MUSCLES survey: ULAS J082016.1 081216

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We present observations of a new double-image gravitational lens system, ULAS J082016.1+081216, of image separation 2.3 and high ({approx}6) flux ratio. The system is selected from the Sloan Digital Sky Survey spectroscopic quasar list using new high-quality images from the UKIRT Deep Sky Survey (UKIDSS). The lensed quasar has a source redshift of 2.024, and we identify the lens galaxy as a faint red object of redshift 0.803 {+-} 0.001. Three other objects from the UKIDSS survey, selected in the same way, were found not to be lens systems. Together with the earlier lens found using this method, the SDSS-UKIDSS ... continued below

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6 pages

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Jackson, Neal; U., /Manchester; Ofek, Eran O.; /Caltech; Oguri, Masamune & /KIPAC, Menlo Park June 19, 2009.

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We present observations of a new double-image gravitational lens system, ULAS J082016.1+081216, of image separation 2.3 and high ({approx}6) flux ratio. The system is selected from the Sloan Digital Sky Survey spectroscopic quasar list using new high-quality images from the UKIRT Deep Sky Survey (UKIDSS). The lensed quasar has a source redshift of 2.024, and we identify the lens galaxy as a faint red object of redshift 0.803 {+-} 0.001. Three other objects from the UKIDSS survey, selected in the same way, were found not to be lens systems. Together with the earlier lens found using this method, the SDSS-UKIDSS lenses have the potential to significantly increase the number of quasar lenses found in SDSS, to extend the survey to higher flux ratios and lower separations, and to give greater completeness which is important for statistical purposes.

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6 pages

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  • Journal Name: Submitted to Monthly Notices of the Royal Astronomical Society

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  • Report No.: SLAC-PUB-13665
  • Grant Number: AC02-76SF00515
  • DOI: 10.1111/j.1365-2966.2009.15198.x | External Link
  • Office of Scientific & Technical Information Report Number: 957426
  • Archival Resource Key: ark:/67531/metadc930272

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  • June 19, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Feb. 17, 2017, 6:35 p.m.

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Jackson, Neal; U., /Manchester; Ofek, Eran O.; /Caltech; Oguri, Masamune & /KIPAC, Menlo Park. A new gravitational lens from the MUSCLES survey: ULAS J082016.1 081216, article, June 19, 2009; United States. (digital.library.unt.edu/ark:/67531/metadc930272/: accessed November 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.