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Journal Article

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

MPS-Authors

Bonvin,  V.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Millon,  M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chan,  J. H. -H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Courbin,  F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rusu,  C. E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sluse,  D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Suyu,  S. H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wong,  K. C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fassnacht,  C. D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Marshall,  P. J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Treu,  T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Buckley-Geer,  E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Frieman,  J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hempel,  A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim,  S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lachaume,  R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rabus,  M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chao,  D. C. -Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chijani,  M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gilman,  D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gilmore,  K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rojas,  K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Williams,  P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Anguita,  T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kochanek,  C. S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Morgan,  C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Motta,  V.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tewes,  M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Meylan,  G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2019A&A...629A..97B
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Citation

Bonvin, V., Millon, M., Chan, J.-H.-.-H., Courbin, F., Rusu, C. E., Sluse, D., et al. (2019). COSMOGRAIL. XVIII. time delays of the quadruply lensed quasar WFI2033-4723. Astronomy and Astrophysics, 629.


Cite as: https://hdl.handle.net/21.11116/0000-0005-D1BE-9
Abstract
We 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 ∆tAB = 36.2+0.7-0.8 days (2.1% precision), ∆tAC = -23.3+1.2-1.4 days (5.6%) and ∆tBC = -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. Full light curves of the four data sets are only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr/">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz- bin/cat/J/A+A/629/A97">http://cdsarc.u-strasbg.fr/viz- bin/cat/J/A+A/629/A97</A>