A SHARP view of H0LiCOW: H0 from three time-delay gravitational lens systems with adaptive optics imaging
- Chen, Geoff C-F ORCID Department of Physics, University of California, Davis, CA 95616, USA
- Fassnacht, Christopher D Department of Physics, University of California, Davis, CA 95616, USA
- Suyu, Sherry H Academia Sinica Institute of Astronomy and Astrophysics (ASIAA), 11F of ASMAB, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
- Rusu, Cristian E ORCID Subaru Telescope, National Astronomical Observatory of Japan, 650 N Aohoku Pl, Hilo, HI 96720, USA
- Chan, James H H ORCID Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
- Wong, Kenneth C Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), University of Tokyo, Chiba 277-8583, Japan
- Auger, Matthew W Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
- Hilbert, Stefan Ludwig-Maximilians-Universitĺat, Universitäts-Sternwarte, Scheinerstr 1, D-81679 Munchen, Germany
- Bonvin, Vivien Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
- Birrer, Simon Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
- Millon, Martin Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
- Koopmans, Léon V E Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700 AV Groningen, the Netherlands
- Lagattuta, David J ORCID Univ Lyon, Univ Lyon 1, Ens de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon UMR5574, F-69230 Saint-Genis-Laval, France
- McKean, John P ASTRON, Netherlands Institute for Radio Astronomy, PO Box 2, NL-7990 AA Dwingeloo, the Netherlands
- Vegetti, Simona Max Planck Institute for Astrophysics, Karl-Schwarzschild-Strasse 1, D-85740 Garching, Germany
- Courbin, Frederic Institute of Physics, Laboratory of Astrophysics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
- Ding, Xuheng Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
- Halkola, Aleksi Py’orrekuja 5 A, FI-04300 Tuusula, Finland
- Jee, Inh Max Planck Institute for Astrophysics, Karl-Schwarzschild-Strasse 1, D-85740 Garching, Germany
- Shajib, Anowar J ORCID Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
- Sluse, Dominique STAR Institute, Quartier Agora – Allée du six Aôut, 19c, B-4000 Liège, Belgium
- Sonnenfeld, Alessandro ORCID Leiden Observatory, Leiden University, Niels Bohrweg 2, NL-2333 CA Leiden, the Netherlands
- Treu, Tommaso Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
- 2019-9-12
Published in:
- Monthly Notices of the Royal Astronomical Society. - Oxford University Press (OUP). - 2019, vol. 490, no. 2, p. 1743-1773
English
ABSTRACT
We present the measurement of the Hubble constant, H0, with three strong gravitational lens systems. We describe a blind analysis of both PG 1115+080 and HE 0435−1223 as well as an extension of our previous analysis of RXJ 1131−1231. For each lens, we combine new adaptive optics (AO) imaging from the Keck Telescope, obtained as part of the SHARP (Strong-lensing High Angular Resolution Programme) AO effort, with Hubble Space Telescope (HST) imaging, velocity dispersion measurements, and a description of the line-of-sight mass distribution to build an accurate and precise lens mass model. This mass model is then combined with the COSMOGRAIL-measured time delays in these systems to determine H0. We do both an AO-only and an AO + HST analysis of the systems and find that AO and HST results are consistent. After unblinding, the AO-only analysis gives $H_{0}=82.8^{+9.4}_{-8.3}~\rm km\, s^{-1}\, Mpc^{-1}$ for PG 1115+080, $H_{0}=70.1^{+5.3}_{-4.5}~\rm km\, s^{-1}\, Mpc^{-1}$ for HE 0435−1223, and $H_{0}=77.0^{+4.0}_{-4.6}~\rm km\, s^{-1}\, Mpc^{-1}$ for RXJ 1131−1231. The joint AO-only result for the three lenses is $H_{0}=75.6^{+3.2}_{-3.3}~\rm km\, s^{-1}\, Mpc^{-1}$. The joint result of the AO + HST analysis for the three lenses is $H_{0}=76.8^{+2.6}_{-2.6}~\rm km\, s^{-1}\, Mpc^{-1}$. All of these results assume a flat Λ cold dark matter cosmology with a uniform prior on Ωm in [0.05, 0.5] and H0 in [0, 150] $\rm km\, s^{-1}\, Mpc^{-1}$. This work is a collaboration of the SHARP and H0LiCOW teams, and shows that AO data can be used as the high-resolution imaging component in lens-based measurements of H0. The full time-delay cosmography results from a total of six strongly lensed systems are presented in a companion paper.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1093/mnras/stz2547
- ISSN 0035-8711
- Persistent URL
- https://folia.unifr.ch/global/documents/187425
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