Strongly lensed quasars in SDSS Virtual Observatory Resource

Authors
  1. Williams P.R.
  2. Agnello A.
  3. Treu T.
  4. Abramson L.E.
  5. Anguita T.,Apostolovski Y.
  6. Chen G.C.-F.
  7. Fassnacht C.D.
  8. Hsueh J.W.
  9. Lemaux B.C.,Motta V.
  10. Oldham L.
  11. Rojas K.
  12. Rusu C.E.
  13. Shajib A.J.
  14. Wang X.
  15. Published by
    CDS
Abstract

We present the discovery of three quasar lenses in the Sloan Digital Sky Survey, selected using two novel photometry-based selection techniques. The J0941+0518 system, with two point sources separated by 5.46 arcsec on either side of a galaxy, has source and lens redshifts 1.54 and 0.343. Images of J2257+2349 show two point sources separated by 1.67 arcsec on either side of an E/S0 galaxy. The extracted spectra show two images of the same quasar at z_s_=2.10. SDSS J1640+1045 has two quasar spectra at z_s_=1.70 and fits to the SDSS and Pan-STARRS images confirm the presence of a galaxy between the two point sources. We observed 56 photometrically selected lens candidates in this follow-up campaign, confirming three new lenses, re-discovering one known lens, and ruling out 36 candidates, with 16 still inconclusive. This initial campaign demonstrates the power of purely photometric selection techniques in finding lensed quasars.

Keywords
  1. gravitational-lensing
  2. redshifted
Bibliographic source Bibcode
2018MNRAS.477L..70W
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/477/L70
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/477/L70
Document Object Identifer DOI
doi:10.26093/cds/vizier.74779070

Access

IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/477/L70/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/477/L70/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/477/L70/table1?

History

2021-06-25T15:52:00Z
Resource record created
2021-06-25T15:52:00Z
Created
2024-08-18T20:19:35Z
Updated

Contact

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CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr