J/A+A/544/A51ivo://CDS.VizieR/J/A+A/544/A51doi:10.26093/cds/vizier.35440051CDSKoptelova E.Chen W.P.Chiueh T.Artamonov B.POknyanskij V.L.,Nuritdinov S.N.Burkhonov O.Akhunov T.Bruevich V.V.Ezhkova O.V.,Gusev A.S.Sergeyev A.V.Ehgamberdiev Sh.A.Ibragimov M.A.2017-06-02T08:37:28Z2012-07-25T10:56:53ZCDS support team

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

cds-question@unistra.frquasarsgravitational-lensingphotometryWe present observational data of the double lensed quasar UM673 obtained with the 1.5-m telescope of the Maidanak Observatory and the 1.3-m SMARTS telescope at CTIO between 2006 and 2010. We combine these data with our previously published observational data of UM673 to measure the time delay between the UM673 images. We also analyze the time evolution of the flux ratio between the UM673 images.2012A&A...544A..51Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/544/A51CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJ/409/28 : Gravitationally Lensed Quasars (Maoz + 1993)J/A+A/420/447 : VRI photometry of lensed quasar QSO B2237+0305 (Vakulik+, 2004)J/A+A/455/L1 : Variability of 5 gravitationally lensed QSOs (Paraficz+, 2006)J/ApJ/662/62 : Optical monitoring of SDSS J1004+4112 (Fohlmeister+, 2007)J/A+A/528/A42 : VRi light curves of the lensed QSO HE 0435-1223 (Ricci+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/544/A51https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/544/A51http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/544/A51https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/544/A51https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/544/A51http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/544/A51GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/544/A51/table2Maidanak-CTIO fluxes of the UM673 images in the R bandrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian Datedtime.epochdoubleSeeingSeeing condition of observationsarcsecinstr.obsty.seeing;obsfloatAmagRelative magnitude of image A of UM673 in Rmagphot.mag;em.opt.Rfloate_AmagError on Amagmagstat.error;phot.magfloatBmagRelative magnitude of image B of UM673 in Rmagphot.mag;em.opt.Rfloate_BmagError on Bmagmagstat.error;phot.mag;em.opt.BfloatObsName of the Oservatory ("Maidanak" or "CTIO")meta.id;instr.obstychar