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Title: SDSS J131339.98+515128.3: A new GravitationallyLensed Quasar Selected Based on Near-infrared Excess

Abstract

We report the discovery of a new gravitationally lensed quasar, SDSS J131339.98+515128.3, at a redshift of 1:875 with an image separation of 1: 0024. The lensing galaxy is clearly detected in visible-light follow-up observations. We also identify three absorption-line doublets in the spectra of the lensed quasar images, from which we measure the lens redshift to be 0:194. Like several other known lenses, the lensed quasar images have different continuum slopes. This difference is probably the result of reddening and microlensing in the lensing galaxy. The lensed quasar was selected by correlating Sloan Digital Sky Survey (SDSS) spectroscopic quasars with Two Micron All Sky Survey (2MASS) sources and choosing quasars that show near-infrared (IR) excess. The near-IR excess can originate, for example, from the contribution of the lensing galaxy at near-IR wavelengths. We show that the near-IR excess technique is indeed an efficient method to identify lensed systems from a large sample of quasars.

Authors:
; ; ; ;
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
917272
Report Number(s):
SLAC-PUB-12799
Journal ID: ISSN 0035-8711; MNRAA4; arXiv:0709.0525; TRN: US200816%%470
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Name: Monthly Notices of the Royal Astronomical Society; Journal ID: ISSN 0035-8711
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; LENSES; QUASARS; SKY; SPECTRA; WAVELENGTHS; Astrophysics,ASTRO, GRQC

Citation Formats

Ofek, E O, Oguri, M, Jackson, N, Inada, N, and Kayo, I. SDSS J131339.98+515128.3: A new GravitationallyLensed Quasar Selected Based on Near-infrared Excess. United States: N. p., 2007. Web. doi:10.1111/j.1365-2966.2007.12389.x.
Ofek, E O, Oguri, M, Jackson, N, Inada, N, & Kayo, I. SDSS J131339.98+515128.3: A new GravitationallyLensed Quasar Selected Based on Near-infrared Excess. United States. https://doi.org/10.1111/j.1365-2966.2007.12389.x
Ofek, E O, Oguri, M, Jackson, N, Inada, N, and Kayo, I. 2007. "SDSS J131339.98+515128.3: A new GravitationallyLensed Quasar Selected Based on Near-infrared Excess". United States. https://doi.org/10.1111/j.1365-2966.2007.12389.x. https://www.osti.gov/servlets/purl/917272.
@article{osti_917272,
title = {SDSS J131339.98+515128.3: A new GravitationallyLensed Quasar Selected Based on Near-infrared Excess},
author = {Ofek, E O and Oguri, M and Jackson, N and Inada, N and Kayo, I},
abstractNote = {We report the discovery of a new gravitationally lensed quasar, SDSS J131339.98+515128.3, at a redshift of 1:875 with an image separation of 1: 0024. The lensing galaxy is clearly detected in visible-light follow-up observations. We also identify three absorption-line doublets in the spectra of the lensed quasar images, from which we measure the lens redshift to be 0:194. Like several other known lenses, the lensed quasar images have different continuum slopes. This difference is probably the result of reddening and microlensing in the lensing galaxy. The lensed quasar was selected by correlating Sloan Digital Sky Survey (SDSS) spectroscopic quasars with Two Micron All Sky Survey (2MASS) sources and choosing quasars that show near-infrared (IR) excess. The near-IR excess can originate, for example, from the contribution of the lensing galaxy at near-IR wavelengths. We show that the near-IR excess technique is indeed an efficient method to identify lensed systems from a large sample of quasars.},
doi = {10.1111/j.1365-2966.2007.12389.x},
url = {https://www.osti.gov/biblio/917272}, journal = {Monthly Notices of the Royal Astronomical Society},
issn = {0035-8711},
number = ,
volume = ,
place = {United States},
year = {Fri Sep 28 00:00:00 EDT 2007},
month = {Fri Sep 28 00:00:00 EDT 2007}
}