J/MNRAS/477/L70ivo://CDS.VizieR/J/MNRAS/477/L70doi:10.26093/cds/vizier.74779070CDSWilliams P.R.Agnello A.Treu T.Abramson L.E.Anguita T.,Apostolovski Y.Chen G.C.-F.Fassnacht C.D.Hsueh J.W.Lemaux B.C.,Motta V.Oldham L.Rojas K.Rusu C.E.Shajib A.J.Wang X.2024-08-18T20:19:35Z2021-06-25T15:52:00ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgravitational-lensingredshiftedWe 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.2018MNRAS.477L..70Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/477/L70CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/477/L70https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/477/L70http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/477/L70https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/477/L70https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/477/L70http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/477/L70GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/477/L70/table1 (List of all observed candidates along with their selection method, observing outcome, and lens and source redshift, if available)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?GETtext/xml+votable180.050000true145.34354815.3069880.0055555555555555566/526 993 2095 2303 2652 2831 4165 5815 7210 7430 12322 12481 12573 12634 13365 13415 15355 17311 17380 17404 17748 17755 17812 17836 18077 18096 18178 18781 19050 19056 19087 19107 19109 19663 19883 19930 20200 21885 21905 21908 21917 22483 23234 24098 27192 27367 27547 30034 31134 31598 32401 32691 36759 40955 48755 49124https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/477/L70?format=asciidefaultJ/MNRAS/477/L70/table1List of all observed candidates along with their selection method, observing outcome, and lens and source redshift, if availablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName (JHHMM+DDMM)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainimagi magnitudemagphot.mag;em.opt.Ifloatimag2? Second value of i magnitudemagphot.mag;em.opt.Ifloatnullableimag3? Third value of i magnitudemagphot.mag;em.opt.IfloatnullableSelModeSelection methodmeta.code;obscharInstInstrumentmeta.id;instrcharComCommentsmeta.notecharzs? Source redshiftsrc.redshift;pos.heliocentricfloatnullablezl? Lens redshiftsrc.redshift;pos.heliocentricfloatnullableu_zl[?] Uncertainty flag on zlmeta.code.errorcharOutcomeObserving outcomemeta.notechar