J/A+A/642/A193ivo://CDS.VizieR/J/A+A/642/A193doi:10.26093/cds/vizier.36420193CDSMillon M.Courbin F.Bonvin V.Buckley-Geer E.Fassnacht C.D.,Frieman J.Marshall P.J.Suyu S.H.Treu T.Anguita T.Motta V.,Agnello A.J.H.H.ChanChao D.C.-YChijani M.Gilman D.Gilmore K.,Lemon C.Lucey J.R.Melo A.Paic E.Rojas K.Sluse D.Williams P.R.,Hempel A.Kim S.Lachaume R.Rabus M.2021-04-27T12:37:48Z2020-10-20T10:16:54ZCDS support team

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

cds-question@unistra.frquasarsgravitational-lensingphotometryWe present six new time-delay measurements obtained from Rc-band monitoring data acquired at the MPIA 2.2m telescope at La Silla observatory between October 2016 and February 2020. The lensed quasars HE 0047-1756, WG 0214-2105, DES 0407-5006, 2M 1134-2103, PSJ 1606-2333 and DES 2325-5229 were observed almost daily at high signal-to-noise ratio to obtain high-quality light curves where we can record fast and small-amplitude variations of the quasars. We measure time delays between all pairs of multiple images with only one or two seasons of monitoring at the exception of the time delays relative to image D of PSJ 1606-2333. The most precise estimate is obtained for the delay between image A and image B of DES 0407-5006, with {tau}_AB_=-128.4^+3.5^_-3.8_ days (2.8% precision) including systematics due to extrinsic variability in the light curves. For HE 0047-1756, we combine our high-cadence data with measurements from decade-long light-curves from previous COSMOGRAIL campaigns, and reach a precision of 0.9 day on the final measurement. The present work demonstrates the feasibility of measuring time delays in lensed quasars in only one or two seasons, provided high signal-to-noise ratio data are obtained at a cadence close to daily.2020A&A...642A.193Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/642/A193CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/488/481 : Time delays and H0 from WFI J2033-4723 (Vuissoz+, 2008)J/A+A/536/A53 : R-band light curves of HE 0435-1223 (Courbin+, 2011)J/A+A/553/A121 : 2 lensed quasars light curves (Eulaers+, 2013)J/A+A/556/A22 : R-band light curves of RX J1131-1231 (Tewes+, 2013)J/A+A/557/A44 : Doubly lensed quasar SDSS J1001+5027 (Rathna Kumar+, 2013)J/ApJ/806/258 : R-band light curves of SDSS J0924+0219(MacLeod+,2019)J/MNRAS/465/4914 : R-band light curves of HE 0435-1223 (Bonvin+, 2017)J/A+A/609/A71 : R-band light curves of DES J0408-5359 (Courbin+ 2018)J/A+A/616/A183 : R-band light curves of PG 1115+080 (Bonvin+, 2018)J/A+A/629/A97 : R-band light curves of WFI2033-4723(Bonvin+, 2019)J/ApJ/873/117 : R-band light curves of SDSS J1515+1511(Shalyapin+, 2019)J/A+A/640/A105 : R-band light curves of 23 lensed quasars (Millon+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/642/A193https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/642/A193http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/642/A193https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/642/A193https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/642/A193http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/642/A193GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/642/A193/list (List of studied lensed quasars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A193/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A193/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A193/list?GETtext/xml+votable180.050000true12.6159167-17.66922220.0055555555555555566/16836 25166 34320 36412 44354 461932.762881831355591e-19 3.3785437584409506e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/642/A193?format=asciidefaultJ/A+A/642/A193/listList of studied lensed quasarsNameNamemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainLCShow the light curvesmeta.ref.urlcharFileNameName of the table with photometrymeta.id;phot;meta.tablecharSNameSimbad namemeta.idcharJ/A+A/642/A193/2m1134Rc-band light curves of 2M 1134-2103recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDMedian Heliocentric Julian Date (HJD-2400000)dtime.epochdoublemagARc magnitude of image Amagphot.mag;em.opt.Rdoublee_magARc magnitude error of image Amagstat.errordoublemagBRc magnitude of image Bmagphot.mag;em.opt.Rdoublee_magBRc magnitude error of image Bmagstat.errordoublemagCRc magnitude of image Cmagphot.mag;em.opt.Rdoublee_magCRc magnitude error of image Cmagstat.errordoublemagDRc magnitude of image Dmagphot.mag;em.opt.Rdoublee_magDRc magnitude error of image Dmagstat.errordoubleTel[WFI] Instrument used for the observationinstr.setupcharJ/A+A/642/A193/ps1606Rc-band light curves of PSJ 1606-2333recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDMedian Heliocentric Julian Date (HJD-2400000)dtime.epochdoublemagARc magnitude of image Amagphot.mag;em.opt.Rdoublee_magARc magnitude error of image Amagstat.errordoublemagBRc magnitude of image Bmagphot.mag;em.opt.Rdoublee_magBRc magnitude error of image Bmagstat.errordoublemagCRc magnitude of image Cmagphot.mag;em.opt.Rdoublee_magCRc magnitude error of image Cmagstat.errordoublemagDRc magnitude of image Dmagphot.mag;em.opt.Rdoublee_magDRc magnitude error of image Dmagstat.errordoubleTel[WFI] Instrument used for the observationinstr.setupcharJ/A+A/642/A193/wg0214Rc-band light curves of WG 0214-2105recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDMedian Heliocentric Julian Date (HJD-2400000)dtime.epochdoublemagARc magnitude of image Amagphot.mag;em.opt.Rdoublee_magARc magnitude error of image Amagstat.errordoublemagBRc magnitude of image Bmagphot.mag;em.opt.Rdoublee_magBRc magnitude error of image Bmagstat.errordoublemagCRc magnitude of image Cmagphot.mag;em.opt.Rdoublee_magCRc magnitude error of image Cmagstat.errordoublemagDRc magnitude of image Dmagphot.mag;em.opt.Rdoublee_magDRc magnitude error of image Dmagstat.errordoubleTel[WFI] Instrument used for the observationinstr.setupcharJ/A+A/642/A193/des0407Rc-band light curves of DES 0407-5006recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDMedian Heliocentric Julian Date (HJD-2400000)dtime.epochdoublemagARc magnitude of image Amagphot.mag;em.opt.Rdoublee_magARc magnitude error of image Amagstat.errordoublemagBRc magnitude of image Bmagphot.mag;em.opt.Rdoublee_magBRc magnitude error of image Bmagstat.errordoubleTel[WFI] Instrument used for the observationinstr.setupcharJ/A+A/642/A193/des2325Rc-band light curves of DES 2325-5229recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDMedian Heliocentric Julian Date (HJD-2400000)dtime.epochdoublemagARc magnitude of image Amagphot.mag;em.opt.Rdoublee_magARc magnitude error of image Amagstat.errordoublemagBRc magnitude of image Bmagphot.mag;em.opt.Rdoublee_magBRc magnitude error of image Bmagstat.errordoubleTel[WFI] Instrument used for the observationinstr.setupcharJ/A+A/642/A193/he0047Rc-band light curves of HE 0047-1756recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDMedian Heliocentric Julian Date (HJD-2400000)dtime.epochdoublemagARc magnitude of image Amagphot.mag;em.opt.Rdoublee_magARc magnitude error of image Amagstat.errordoublemagBRc magnitude of image Bmagphot.mag;em.opt.Rdoublee_magBRc magnitude error of image Bmagstat.errordoubleTel[WFI] Instrument used for the observationinstr.setupchar