H0LiCOW XII. Lens mass model of WFI20334723 and blind measurement of its timedelay distance and H_{0}
Abstract
We present the lens mass model of the quadruplyimaged gravitationally lensed quasar WFI2033  4723, and perform a blind cosmographical analysis based on this system. Our analysis combines (1) timedelay measurements from 14 yr of data obtained by the COSmological MOnitoring of GRAvItational Lenses (COSMOGRAIL) collaboration, (2) highresolution Hubble Space Telescope imaging, (3) a measurement of the velocity dispersion of the lens galaxy based on ESOMUSE data, and (4) multiband, widefield imaging and spectroscopy characterizing the lens environment. We account for all known sources of systematics, including the influence of nearby perturbers and complex lineofsight structure, as well as the parametrization of the light and mass profiles of the lensing galaxy. After unblinding, we determine the effective timedelay 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 Ω_{m} 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 timedelay cosmography results from a total of six strongly lensed systems are presented in a companion paper (H0LiCOW XIII).
 Publication:

Monthly Notices of the Royal Astronomical Society
 Pub Date:
 October 2020
 DOI:
 10.1093/mnras/stz3451
 arXiv:
 arXiv:1905.09338
 Bibcode:
 2020MNRAS.498.1440R
 Keywords:

 gravitational lensing: strong;
 cosmological parameters;
 distance scale;
 Astrophysics  Cosmology and Nongalactic Astrophysics
 EPrint:
 Version accepted by MNRAS. 29 pages including appendix, 17 figures, 6 tables. arXiv admin note: text overlap with arXiv:1607.01403