H0LiCOW - X. Spectroscopic/imaging survey and galaxy-group identification around the strong gravitational lens system WFI 2033-4723
- Sluse, Dominique
- Rusu, C. E.
- Fassnacht, C. D.
- Sonnenfeld, A.
- Richard, J.
- Auger, M. W.
- Coccato, L.
- Wong, K. C.
- Suyu, S. H.
- Treu, T.
- Agnello, Adriano
- Birrer, S.
- Bonvin, V.
- Collett, T.
- Courbin, F.
- Hilbert, S.
- Koopmans, L. V. E.
- Tihhanova, O.
- Marshall, P. J.
- Meylan, G.
- Shajib, A. J.
- Annis, J.
- Avila, S.
- Bertin, E.
- Brooks, D.
- Buckley-Geer, E.
- Burke, D. L.
- Carnero Rosell, A.
- Carrasco Kind, M.
- Carretero, J.
- Castander, F. J.
- da Costa, L. N.
- De Vicente, J.
- Desai, S.
- Doel, P.
- Evrard, A. E.
- Flaugher, B.
- Frieman, J.
- García-Bellido, J.
- Gerdes, D. W.
- Goldstein, D. A.
- Gruendl, R. A.
- Gschwend, J.
- Hartley, W. G.
- Hollowood, D. L.
- Honscheid, K.
- James, D. J.
- Kim, A. G.
- Krause, E.
- Kuehn, K.
- Kuropatkin, N.
- Lima, M.
- Lin, H.
- Maia, M. A. G.
- Marshall, J. L.
- Melchior, P.
- Menanteau, F.
- Miquel, R.
- Plazas, A. A.
- Sanchez, E.
- Serrano, S.
- Sevilla-Noarbe, I.
- Smith, M.
- Soares-Santos, M.
- Sobreira, F.
- Suchyta, E.
- Swanson, M. E. C.
- Tarle, G.
DOIAbstract
peer reviewedGalaxies and galaxy groups located along the line of sight towards gravitationally lensed quasars produce high-order perturbations of the gravitational potential at the lens position. When these perturbation are too large, they can induce a systematic error on H[SUB]0[/SUB] of a few per cent if the lens system is used for cosmological inference and the perturbers are not explicitly accounted for in the lens model. In this work, we present a detailed characterization of the environment of the lens system WFI 2033-4723 (z_src = 1.662, z_lens= 0.6575), one of the core targets of the H0LiCOW project for which we present cosmological inferences in a companion paper. We use the Gemini and ESO- Very Large telescopes to measure the spe...
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