H0LiCOW XII. Lens mass model of WFI2033-4723 and blind measurement of its time-delay distance and H0
Treu, Tommaso; Marshall, Philip J.; Sonnenfeld, Alessandro; Fassnacht, Christopher D.; Auger, Matthew W.; Birrer, Simon; Chen, Geoff C. -F.; Sluse, Dominique; Hilbert, Stefan; Bonvin, Vivien; Wong, Kenneth C.; Suyu, Sherry H.; Koopmans, Léon V. E.; Courbin, Frederic; Shajib, Anowar J.; Rusu, Cristian E.; Chan, James H. H.; Halkola, Aleksi
Japan, United States, Switzerland, Belgium, Germany, Taiwan, United Kingdom, Netherlands, Finland
Abstract
We present the lens mass model of the quadruply-imaged gravitationally lensed quasar WFI2033 - 4723, and perform a blind cosmographical analysis based on this system. Our analysis combines (1) time-delay measurements from 14 yr of data obtained by the COSmological MOnitoring of GRAvItational Lenses (COSMOGRAIL) collaboration, (2) high-resolution Hubble Space Telescope imaging, (3) a measurement of the velocity dispersion of the lens galaxy based on ESO-MUSE data, and (4) multi-band, wide-field imaging and spectroscopy characterizing the lens environment. We account for all known sources of systematics, including the influence of nearby perturbers and complex line-of-sight structure, as well as the parametrization of the light and mass profiles of the lensing galaxy. After unblinding, we determine the effective time-delay distance to be $4784_{-248}^{+399}~\mathrm{Mpc}$ , an average precision of $6.6{{\ \rm per\ cent}}$ . This translates to a Hubble constant $H_{0} = 71.6_{-4.9}^{+3.8}~\mathrm{km~s^{-1}~Mpc^{-1}}$ , assuming a flat ΛCDM cosmology with a uniform prior on Ωm in the range [0.05, 0.5]. This work is part of the H0 Lenses in COSMOGRAIL's Wellspring (H0LiCOW) collaboration, and the full time-delay cosmography results from a total of six strongly lensed systems are presented in a companion paper (H0LiCOW XIII).