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  Cosmograil XVIII. time delays of the quadruply lensed quasar WFI2033−4723

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: A97. doi:10.1051/0004-6361/201935921.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-D643-F Version Permalink: http://hdl.handle.net/21.11116/0000-0004-D644-E
Genre: Journal Article

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 Creators:
Bonvin, V., Author
Millon, M., Author
Chan, J. H.-H., Author
Courbin, F., Author
Rusu, C. E., Author
Sluse, D., Author
Suyu, S. H.1, Author              
Wong, K. C., Author
Fassnacht, C. D., Author
Marshall, P. J., Author
Treu, T., Author
Buckley-Geer, E., Author
Frieman, J., Author
Hempel, A., Author
Kim, S., Author
Lachaume, R., Author
Rabus, M., Author
Chao, D. C.-Y.1, Author              
Chijani, M., Author
Gilman, D., Author
Gilmore, K., AuthorRojas, K., AuthorWilliams, P., AuthorAnguita, T., AuthorKochanek, C. S., AuthorMorgan, C., AuthorMotta, V., AuthorTewes, M., AuthorMeylan, G., Author more..
Affiliations:
1Physical Cosmology, MPI for Astrophysics, Max Planck Society, ou_2205644              

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 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 ΔtAB = 36.2+0.7−0.8 days (2.1% precision), ΔtAC = −23.3+1.2−1.4 days (5.6%) and ΔtBC = −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.

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 Dates: 2019-06-11
 Publication Status: Published online
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 Rev. Method: -
 Identifiers: DOI: 10.1051/0004-6361/201935921
Other: LOCALID: 3168587
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Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
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Publ. Info: France : EDP Sciences S A
Pages: - Volume / Issue: 629 Sequence Number: A97 Start / End Page: - Identifier: ISSN: 1432-0746
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1