H0LiCOW XII. Lens mass model of WFI2033 − 4723 and blind measurement of its time-delay distance and H0. Issue 1 (16th September 2019)

• Record Type: Journal Article
• Authors: Rusu, Cristian E; Wong, Kenneth C; Bonvin, Vivien; Sluse, Dominique; Suyu, Sherry H; Fassnacht, Christopher D; Chan, James H H; Hilbert, Stefan; Auger, Matthew W; Sonnenfeld, Alessandro; Birrer, Simon; Courbin, Frederic; Treu, Tommaso; Chen, Geoff C-F; Halkola, Aleksi; Koopmans, Léon V E; Marshall, Philip J; Shajib, Anowar J
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 498:Issue 1(2020)
• Page Start: 1440
• Page End: 1468
• Publication Date: 2019-09-16
• Subjects: gravitational lensing: strong -- cosmological parameters -- distance scale; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/stz3451
• Languages: English
• ISSNs: 0035-8711

Abstract

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 H 0 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).