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RELICS: Strong Lensing Analysis of MACS J0417.5–1154 and Predictions for Observing the Magnified High-redshift Universe with JWST

Mahler, Guillaume and Sendra-Server, Irene (2019) RELICS: Strong Lensing Analysis of MACS J0417.5–1154 and Predictions for Observing the Magnified High-redshift Universe with JWST. Astrophysical Journal, 873 (1). Art. No. 96. ISSN 1538-4357. http://resolver.caltech.edu/CaltechAUTHORS:20190307-092622021

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Abstract

Strong gravitational lensing by clusters of galaxies probes the mass distribution at the core of each cluster and magnifies the universe behind it. MACS J0417.5−1154 at z = 0.443 is one of the most massive clusters known based on weak lensing, X-ray, and Sunyaev–Zel'dovich analyses. Here we compute a strong lens model of MACS J0417 based on Hubble Space Telescope imaging observations collected, in part, by the Reionization Lensing Cluster Survey (RELICS), and recently reported spectroscopic redshifts from the MUSE instrument on the Very Large Telescope (VLT). We measure an Einstein radius of θ_{E} ≃ 36" at z = 9 and a mass projected within 200 kpc of M_(200 kpc) = 1.78_(0.03)^(0.01) x 10^(14) M_⊙. Using this model, we measure a ratio between the mass attributed to cluster-member galaxy halos and the main cluster halo of order 1:100. We assess the probability to detect magnified high-redshift galaxies in the field of this cluster, both for comparison with RELICS HST results and as a prediction for the James Webb Space Telescope (JWST) Guaranteed Time Observations upcoming for this cluster. Our lensing analysis indicates that this cluster has similar lensing strength to other clusters in the RELICS program. Our lensing analysis predicts a detection of at least a few z ~ 6–8 galaxies behind this cluster, at odds with a recent analysis that yielded no such candidates in this field. Reliable strong lensing models are crucial for accurately predicting the intrinsic properties of lensed galaxies. As part of the RELICS program, our strong lensing model produced with the Lenstool parametric method is publicly available through the Mikulski Archive for Space Telescopes.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/1538-4357/ab042bDOIArticle
https://arxiv.org/abs/1810.13439arXivDiscussion Paper
ORCID:
AuthorORCID
Mahler, Guillaume0000-0003-3266-2001
Additional Information:© 2019. The American Astronomical Society. Received 2018 October 6; revised 2019 January 28; accepted 2019 January 31; published 2019 March 7. Support for program GO-14096 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. This paper is based on observations made with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with program GO-14096. Archival data are associated with program GO-12009. This paper includes data gathered with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile. M.J. was supported by the Science and Technology Facilities Council (grant No. ST/L00075X/1) and used the DiRAC Data Centric system at Durham University, operated by the Institute for Computational Cosmology on behalf of the STFC DiRAC HPC Facility (www.dirac.ac.uk). This equipment was funded by BIS National E-infrastructure capital grant ST/K00042X/1, STFC capital grant ST/H008519/1, and STFC DiRAC Operations grant ST/K003267/1 and Durham University. DiRAC is part of the National E-Infrastructure. A.C.E. acknowledges support from STFC grant ST/P00541/1. I.U.R. acknowledges support from NSF grants AST-1613536 and AST-1815403. Lawrence Livermore National Laboratory is operated by Lawrence Livermore National Security, LLC, for the U.S. Department of Energy, National Nuclear Security Administration under Contract DE-AC52-07NA27344. Facilities: HST(WFC3 - , ACS) Magellan(LDSS3) - , VLT(MUSE) - .
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASAGO-14096
NASANAS5-26555
NASAGO-12009
Science and Technology Facilities Council (STFC)ST/L00075X/1
Science and Technology Facilities Council (STFC)ST/K00042X/1
Science and Technology Facilities Council (STFC)ST/H008519/1
Science and Technology Facilities Council (STFC)ST/K003267/1
Durham UniversityUNSPECIFIED
Science and Technology Facilities Council (STFC)ST/P00541/1
NSFAST-1613536
NSFAST-1815403
Department of Energy (DOE)DE-AC52-07NA27344
Subject Keywords:galaxies: clusters: individual (MACSJ0417.5–1154) ; gravitational lensing: strong
Record Number:CaltechAUTHORS:20190307-092622021
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190307-092622021
Official Citation:Guillaume Mahler et al 2019 ApJ 873 96
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:93622
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:08 Mar 2019 15:38
Last Modified:08 Mar 2019 15:38

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