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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.author | Giannini, E. | |
dc.contributor.author | Schmidt, R. W. | |
dc.contributor.author | Wambsganss, J. | |
dc.contributor.author | Alsubai, K. | |
dc.contributor.author | Andersen, J. M. | |
dc.contributor.author | Anguita, T. | |
dc.contributor.author | Bozza, V. | |
dc.contributor.author | Bramich, D. M. | |
dc.contributor.author | Browne, P. | |
dc.contributor.author | Calchi Novati, S. | |
dc.contributor.author | Damerdji, Y. | |
dc.contributor.author | Diehl, C. | |
dc.contributor.author | Dodds, P. | |
dc.contributor.author | Dominik, M. | |
dc.contributor.author | Elyiv, A. | |
dc.contributor.author | Fang, X. | |
dc.contributor.author | Figuera Jaimes, R. | |
dc.contributor.author | Finet, F. | |
dc.contributor.author | Gerner, T. | |
dc.contributor.author | Gu, S. | |
dc.contributor.author | Hardis, S. | |
dc.contributor.author | Harpsøe, K. | |
dc.contributor.author | Hinse, T. C. | |
dc.contributor.author | Hornstrup, A. | |
dc.contributor.author | Hundertmark, M. | |
dc.contributor.author | Jessen-Hansen, J. | |
dc.contributor.author | Jørgensen, U. G. | |
dc.contributor.author | Juncher, D. | |
dc.contributor.author | Kains, N. | |
dc.contributor.author | Kerins, E. | |
dc.contributor.author | Korhonen, H. | |
dc.contributor.author | Liebig, C. | |
dc.contributor.author | Lund, M. N. | |
dc.contributor.author | Lundkvist, M. S. | |
dc.contributor.author | Maier, G. | |
dc.contributor.author | Mancini, L. | |
dc.contributor.author | Masi, G. | |
dc.contributor.author | Mathiasen, M. | |
dc.contributor.author | Penny, M. | |
dc.contributor.author | Proft, S. | |
dc.contributor.author | Rabus, M. | |
dc.contributor.author | Rahvar, S. | |
dc.contributor.author | Ricci, D. | |
dc.contributor.author | Scarpetta, G. | |
dc.contributor.author | Sahu, K. | |
dc.contributor.author | Schäfer, S. | |
dc.contributor.author | Schönebeck, F. | |
dc.contributor.author | Skottfelt, J. | |
dc.contributor.author | Snodgrass, C. | |
dc.contributor.author | Southworth, J. | |
dc.contributor.author | Surdej, J. | |
dc.contributor.author | Tregloan-Reed, J. | |
dc.contributor.author | Vilela, C. | |
dc.contributor.author | Wertz, O. | |
dc.contributor.author | Zimmer, F. | |
dc.date.accessioned | 2017-01-23T12:30:11Z | |
dc.date.available | 2017-01-23T12:30:11Z | |
dc.date.issued | 2017-01 | |
dc.identifier | 248984508 | |
dc.identifier | 3e8e589d-3616-4fc7-8612-fa05713fe16d | |
dc.identifier | 85007348650 | |
dc.identifier | 000392392900016 | |
dc.identifier.citation | Giannini , E , Schmidt , R W , Wambsganss , J , Alsubai , K , Andersen , J M , Anguita , T , Bozza , V , Bramich , D M , Browne , P , Calchi Novati , S , Damerdji , Y , Diehl , C , Dodds , P , Dominik , M , Elyiv , A , Fang , X , Figuera Jaimes , R , Finet , F , Gerner , T , Gu , S , Hardis , S , Harpsøe , K , Hinse , T C , Hornstrup , A , Hundertmark , M , Jessen-Hansen , J , Jørgensen , U G , Juncher , D , Kains , N , Kerins , E , Korhonen , H , Liebig , C , Lund , M N , Lundkvist , M S , Maier , G , Mancini , L , Masi , G , Mathiasen , M , Penny , M , Proft , S , Rabus , M , Rahvar , S , Ricci , D , Scarpetta , G , Sahu , K , Schäfer , S , Schönebeck , F , Skottfelt , J , Snodgrass , C , Southworth , J , Surdej , J , Tregloan-Reed , J , Vilela , C , Wertz , O & Zimmer , F 2017 , ' MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756 : microlensing and a new time delay ' , Astronomy & Astrophysics , vol. 597 , A49 . https://doi.org/10.1051/0004-6361/201527422 | en |
dc.identifier.issn | 0004-6361 | |
dc.identifier.other | BibCode: 2017A&A...597A..49G | |
dc.identifier.other | ORCID: /0000-0002-3202-0343/work/75996702 | |
dc.identifier.uri | https://hdl.handle.net/10023/10157 | |
dc.description | MAS. M.D. and M.H. are supported by NPRP grant NPRP-09-476-1-78 from the Qatar National Research Fund (a member of Qatar Foundation). | en |
dc.description.abstract | Aims: 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. | |
dc.format.extent | 16 | |
dc.format.extent | 859922 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy & Astrophysics | en |
dc.subject | Gravitational lensing: micro | en |
dc.subject | Techniques: photometric | en |
dc.subject | Quasars: general | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | NDAS | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756 : microlensing and a new time delay | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. St Andrews Centre for Exoplanet Science | en |
dc.identifier.doi | https://doi.org/10.1051/0004-6361/201527422 | |
dc.description.status | Peer reviewed | en |
dc.identifier.url | http://adsabs.harvard.edu/abs/2017A%26A...597A..49G | en |
dc.identifier.url | https://arxiv.org/abs/1610.03732 | en |
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