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

E. Giannini, R. W. Schmidt, J. Wambsganss, K. Alsubai, J. M. Andersen, T. Anguita, V. Bozza, D. M. Bramich, P. Browne, S. Calchi Novati, Y. Damerdji, C. Diehl, P. Dodds, M. Dominik, A. Elyiv, X. Fang, R. Figuera Jaimes, F. Finet, T. Gerner, S. Gu & 35 otros S. Hardis, K. Harpsøe, T. C. Hinse, A. Hornstrup, M. Hundertmark, J. Jessen-Hansen, U. G. Jørgensen, D. Juncher, N. Kains, E. Kerins, H. Korhonen, C. Liebig, M. N. Lund, M. S. Lundkvist, G. Maier, L. Mancini, G. Masi, M. Mathiasen, M. Penny, S. Proft, M. Rabus, S. Rahvar, D. Ricci, G. Scarpetta, K. Sahu, S. Schäfer, F. Schönebeck, J. Skottfelt, C. Snodgrass, J. Southworth, J. Surdej, J. Tregloan-Reed, C. Vilela, O. Wertz, F. Zimmer

Resultado de la investigación: Research - revisión exhaustivaArticle

Resumen

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.

IdiomaEnglish
Número de artículoA49
PublicaciónAstronomy and Astrophysics
Volumen597
DOI
EstadoPublished - 1 ene 2017

Huella dactilar

quasars
photometry
time lag
method
observatory
filter
European Southern Observatory
subtraction
observatories
brightness
telescopes
filters
estimates

Keywords

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Citar esto

    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./ MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756 : Microlensing and a new time delay. En: Astronomy and Astrophysics. 2017 ; Vol. 597.
    @article{419ded9fb3a246bc90b7b9b1ef6ba108,
    title = "MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756: Microlensing and a new time delay",
    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.",
    keywords = "Gravitational lensing: Micro, Quasars: General, Techniques: Photometric",
    author = "E. Giannini and Schmidt, {R. W.} and J. Wambsganss and K. Alsubai and Andersen, {J. M.} and T. Anguita and V. Bozza and Bramich, {D. M.} and P. Browne and {Calchi Novati}, S. and Y. Damerdji and C. Diehl and P. Dodds and M. Dominik and A. Elyiv and X. Fang and {Figuera Jaimes}, R. and F. Finet and T. Gerner and S. Gu and S. Hardis and K. Harpsøe and Hinse, {T. C.} and A. Hornstrup and M. Hundertmark and J. Jessen-Hansen and Jørgensen, {U. G.} and D. Juncher and N. Kains and E. Kerins and H. Korhonen and C. Liebig and Lund, {M. N.} and Lundkvist, {M. S.} and G. Maier and L. Mancini and G. Masi and M. Mathiasen and M. Penny and S. Proft and M. Rabus and S. Rahvar and D. Ricci and G. Scarpetta and K. Sahu and S. Schäfer and F. Schönebeck and J. Skottfelt and C. Snodgrass and J. Southworth and J. Surdej and J. Tregloan-Reed and C. Vilela and O. Wertz and F. Zimmer",
    year = "2017",
    month = "1",
    doi = "10.1051/0004-6361/201527422",
    volume = "597",
    journal = "Astronomy and Astrophysics",
    issn = "0004-6361",
    publisher = "EDP Sciences",

    }

    Giannini, E, Schmidt, RW, Wambsganss, J, Alsubai, K, Andersen, JM, Anguita, T, Bozza, V, Bramich, DM, 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, TC, Hornstrup, A, Hundertmark, M, Jessen-Hansen, J, Jørgensen, UG, Juncher, D, Kains, N, Kerins, E, Korhonen, H, Liebig, C, Lund, MN, Lundkvist, MS, 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 and Astrophysics, vol. 597, A49. DOI: 10.1051/0004-6361/201527422

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

    En: Astronomy and Astrophysics, Vol. 597, A49, 01.01.2017.

    Resultado de la investigación: Research - revisión exhaustivaArticle

    TY - JOUR

    T1 - MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756

    T2 - Astronomy and Astrophysics

    AU - Giannini,E.

    AU - Schmidt,R. W.

    AU - Wambsganss,J.

    AU - Alsubai,K.

    AU - Andersen,J. M.

    AU - Anguita,T.

    AU - Bozza,V.

    AU - Bramich,D. M.

    AU - Browne,P.

    AU - Calchi Novati,S.

    AU - Damerdji,Y.

    AU - Diehl,C.

    AU - Dodds,P.

    AU - Dominik,M.

    AU - Elyiv,A.

    AU - Fang,X.

    AU - Figuera Jaimes,R.

    AU - Finet,F.

    AU - Gerner,T.

    AU - Gu,S.

    AU - Hardis,S.

    AU - Harpsøe,K.

    AU - Hinse,T. C.

    AU - Hornstrup,A.

    AU - Hundertmark,M.

    AU - Jessen-Hansen,J.

    AU - Jørgensen,U. G.

    AU - Juncher,D.

    AU - Kains,N.

    AU - Kerins,E.

    AU - Korhonen,H.

    AU - Liebig,C.

    AU - Lund,M. N.

    AU - Lundkvist,M. S.

    AU - Maier,G.

    AU - Mancini,L.

    AU - Masi,G.

    AU - Mathiasen,M.

    AU - Penny,M.

    AU - Proft,S.

    AU - Rabus,M.

    AU - Rahvar,S.

    AU - Ricci,D.

    AU - Scarpetta,G.

    AU - Sahu,K.

    AU - Schäfer,S.

    AU - Schönebeck,F.

    AU - Skottfelt,J.

    AU - Snodgrass,C.

    AU - Southworth,J.

    AU - Surdej,J.

    AU - Tregloan-Reed,J.

    AU - Vilela,C.

    AU - Wertz,O.

    AU - Zimmer,F.

    PY - 2017/1/1

    Y1 - 2017/1/1

    N2 - 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.

    AB - 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.

    KW - Gravitational lensing: Micro

    KW - Quasars: General

    KW - Techniques: Photometric

    UR - http://www.scopus.com/inward/record.url?scp=85007348650&partnerID=8YFLogxK

    U2 - 10.1051/0004-6361/201527422

    DO - 10.1051/0004-6361/201527422

    M3 - Article

    VL - 597

    JO - Astronomy and Astrophysics

    JF - Astronomy and Astrophysics

    SN - 0004-6361

    M1 - A49

    ER -