COSMOGRAIL XVIII. time delays of the quadruply lensed quasar WFI2033-4723

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dc.contributor.authorBonvin, V.
dc.contributor.authorMillon, M.
dc.contributor.authorChan, J. H. -H.
dc.contributor.authorCourbin, F.
dc.contributor.authorRusu, C. E.
dc.contributor.authorSluse, D.
dc.contributor.authorSuyu, S. H.
dc.contributor.authorWong, K. C.
dc.contributor.authorFassnacht, C. D.
dc.contributor.authorMarshall, P. J.
dc.contributor.authorTreu, T.
dc.contributor.authorBuckley-Geer, E.
dc.contributor.authorFrieman, J.
dc.contributor.authorHempel, A.
dc.contributor.authorKim, S.
dc.contributor.authorLachaume, R.
dc.contributor.authorRabus, M.
dc.contributor.authorChao, D. C. -Y.
dc.contributor.authorChijani, M.
dc.contributor.authorGilman, D.
dc.contributor.authorGilmore, K.
dc.contributor.authorRojas, K.
dc.contributor.authorWilliams, P.
dc.contributor.authorAnguita, T.
dc.contributor.authorKochanek, C. S.
dc.contributor.authorMorgan, C.
dc.contributor.authorMotta, V.
dc.contributor.authorTewes, M.
dc.contributor.authorMeylan, G.
dc.date.accessioned2025-01-23T21:11:04Z
dc.date.available2025-01-23T21:11:04Z
dc.date.issued2019
dc.description.abstractWe present new measurements of the time delays of WFI2033-4723. The data sets used in this work include 14 years of data taken at the 1.2 m Leonhard Euler Swiss telescope, 13 years of data from the SMARTS 1.3 m telescope at Las Campanas Observatory and a single year of high-cadence and high-precision monitoring at the MPIA 2.2 m telescope. The time delays measured from these different data sets, all taken in the R-band, are in good agreement with each other and with previous measurements from the literature. Combining all the time-delay estimates from our data sets results in Delta t(AB) = 36.2(-0.8)(+0.7) days (2.1% precision), Delta t(AC) = 23.3(-1.4)(+1.2) days (5.6%) and Delta t(BC) = 59.4(-1.3)(+1.3) days (2.2%). In addition, the close image pair A1-A2 of the lensed quasars can be resolved in the MPIA 2.2 m data. We measure a time delay consistent with zero in this pair of images. We also explore the prior distributions of microlensing time-delay potentially affecting the cosmological time-delay measurements of WFI2033-4723. Our time-delay measurements are not precise enough to conclude that microlensing time delay is present or absent from the data. This work is part of a H0LiCOW series focusing on measuring the Hubble constant from WFI2033-4723.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361/201935921
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://doi.org/10.1051/0004-6361/201935921
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100880
dc.identifier.wosidWOS:000485214900001
dc.language.isoen
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectgravitational lensing: strong
dc.subjectgalaxies: individual: WFI2033-4723
dc.subjectcosmological parameters
dc.titleCOSMOGRAIL XVIII. time delays of the quadruply lensed quasar WFI2033-4723
dc.typeartículo
dc.volumen629
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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