MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756: Microlensing and a new time delay

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dc.contributor.authorGiannini E.
dc.contributor.authorSchmidt R.W.
dc.contributor.authorWambsganss J.
dc.contributor.authorAlsubai K.
dc.contributor.authorAndersen J.M.
dc.contributor.authorAnguita T.
dc.contributor.authorBozza V.
dc.contributor.authorBramich D.M.
dc.contributor.authorBrowne P.
dc.contributor.authorCalchi Novati S.
dc.contributor.authorDamerdji Y.
dc.contributor.authorDiehl C.
dc.contributor.authorDodds P.
dc.contributor.authorDominik M.
dc.contributor.authorElyiv A.
dc.contributor.authorFang X.
dc.contributor.authorFiguera Jaimes R.
dc.contributor.authorFinet F.
dc.contributor.authorGerner T.
dc.contributor.authorGu S.
dc.contributor.authorHardis S.
dc.contributor.authorHarpsøe K.
dc.contributor.authorHinse T.C.
dc.contributor.authorHornstrup A.
dc.contributor.authorHundertmark M.
dc.contributor.authorJessen-Hansen J.
dc.contributor.authorJørgensen U.G.
dc.contributor.authorJuncher D.
dc.contributor.authorKains N.
dc.contributor.authorKerins E.
dc.contributor.authorKorhonen H.
dc.contributor.authorLiebig C.
dc.contributor.authorLund M.N.
dc.contributor.authorLundkvist M.S.
dc.contributor.authorMaier G.
dc.contributor.authorMancini L.
dc.contributor.authorMasi G.
dc.contributor.authorMathiasen M.
dc.contributor.authorPenny M.
dc.contributor.authorProft S.
dc.contributor.authorRabus M.
dc.contributor.authorRahvar S.
dc.contributor.authorRicci D.
dc.contributor.authorScarpetta G.
dc.contributor.authorSahu K.
dc.contributor.authorSchäfer S.
dc.contributor.authorSchönebeck F.
dc.contributor.authorSkottfelt J.
dc.contributor.authorSnodgrass C.
dc.contributor.authorSouthworth J.
dc.contributor.authorSurdej J.
dc.contributor.authorTregloan-Reed J.
dc.contributor.authorVilela C.
dc.contributor.authorWertz O.
dc.contributor.authorZimmer F.
dc.date.accessioned2024-09-25T20:40:54Z
dc.date.available2024-09-25T20:40:54Z
dc.date.issued2017
dc.descriptionIndexación: Scopus
dc.description.abstractAims. We present V and R photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756. The data were taken by the MiNDSTEp collaboration with the 1.54 m Danish telescope at the ESO La Silla observatory from 2008 to 2012. Methods. Differential photometry has been carried out using the image subtraction method as implemented in the HOTPAnTS package, additionally using GALFIT for quasar photometry. Results. The quasar WFI 2033-4723 showed brightness variations of order 0.5 mag in V and R during the campaign. The two lensed components of quasar HE 0047-1756 varied by 0.2-0.3 mag within five years. We provide, for the first time, an estimate of the time delay of component B with respect to A of Δt = (7.6 ± 1.8) days for this object. We also find evidence for a secular evolution of the magnitude difference between components A and B in both filters, which we explain as due to a long-duration microlensing event. Finally we find that both quasars WFI 2033-4723 and HE 0047-1756 become bluer when brighter, which is consistent with previous studies. © ESO, 2016.
dc.description.urihttps://www.aanda.org/articles/aa/full_html/2017/01/aa27422-15/aa27422-15.html
dc.identifier.citationAstronomy and Astrophysics Volume 5971 January 2017 Article number A49
dc.identifier.doi10.1051/0004-6361/201527422
dc.identifier.issn0004-6361
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/60525
dc.language.isoen
dc.publisherEDP Sciences
dc.rights.licenseAttribution 4.0 International CC BY 4.0 Deed
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.en
dc.subjectGravitational lensing: Micro
dc.subjectQuasars: General
dc.subjectTechniques: Photometric
dc.titleMiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756: Microlensing and a new time delay
dc.typeArtículo
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