J/A+A/616/A183ivo://CDS.VizieR/J/A+A/616/A183doi:10.26093/cds/vizier.36160183CDSBonvin V.Chan J.H.H.Millon M.Rojas K.Courbin F.Chen G.C.-F.,Fassnacht C.D.Paic E.Tewes M.Chao D.C.-Y.Chijani M.Gilman D.,Gilmore K.Williams P.Buckley-Geer E.Frieman J.Marshall P.J.,Suyu S.H.Treu T.Hempel A.Kim S.Lachaume R.Rabus M.Anguita T.,Meylan G.Motta V.Magain P.2019-01-25T11:12:28Z2018-09-11T07:34:17ZCDS support team

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

cds-question@unistra.frquasarsgravitational-lensingphotometryWe present time-delay estimates for the quadruply imaged quasar PG 1115+080. Our results are based on almost daily observations for seven months at the ESO MPIA 2.2m telescope at La Silla Observatory, reaching a signal-to-noise ratio of about 1000 per quasar image. In addition, we re-analyze existing light curves from the literature that we complete with an additional three seasons of monitoring with the Mercator telescope at La Palma Observatory. When exploring the possible source of bias we considered the so-called microlensing time delay, a potential source of systematic error so far never directly accounted for in previous time-delay publications. In fifteen years of data on PG 1115+080, we find no strong evidence of microlensing time delay. Therefore not accounting for this effect, our time-delay estimates on the individual data sets are in good agreement with each other and with the literature.2018A&A...616A.183Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/616/A183CatalogResearchIsServedByTAP VizieR generic 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/MNRAS/445/2677 : Peculiar velocities in 6dFGS (Springob+, 2014)J/A+A/584/A26 : Cosmography of OB stars in solar neighbourhood (Bouy+, 2015)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)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/616/A183https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/616/A183http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/616/A183https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/616/A183https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/616/A183http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/616/A183GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/616/A183/fig2R-band light curves of PG 1115+080recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMHJDModified Julian Date (heliocentric)dtime.epochdoublemagARelative magnitude of quasar image Amagphot.mag;arith.diffdoublee_magAMagnitude uncertainty of quasar image Amagstat.errordoublemagBRelative magnitude of quasar image Bmagphot.mag;arith.diffdoublee_magBMagnitude uncertainty of quasar image Bmagstat.errordoublemagCRelative magnitude of quasar image Cmagphot.mag;arith.diffdoublee_magCMagnitude uncertainty of quasar image Cmagstat.errordouble