RELICS: Strong Lensing Analysis of MACS J0417.5-1154 and Predictions for Observing the Magnified High-redshift Universe with JWST
Avila, Roberto J.
Bradley, Larry D.
Czakon, Nicole G.
Dawson, William A.
Frye, Brenda L.
Hoag, Austin T.
Johnson, Traci L.
Roederer, Ian U.
Ryan, Russell E.
Stark, Daniel P.
AffiliationUniv Arizona, Dept Astron, Steward Observ
MetadataShow full item record
PublisherIOP PUBLISHING LTD
CitationGuillaume Mahler et al 2019 ApJ 873 96
Rights© 2019. The American Astronomical Society. All rights reserved.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractStrong 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 theta(E) similar or equal to 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-circle dot. 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 similar to 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.
VersionFinal published version
SponsorsNASA through Space Telescope Science Institute [GO-14096]; NASA [NAS5-26555, NAS 5-26555]; Science and Technology Facilities Council [ST/L00075X/1]; BIS National E-infrastructure capital grant [ST/K00042X/1]; STFC capital grant [ST/H008519/1]; STFC DiRAC Operations grant [ST/K003267/1]; Durham University; STFC [ST/P00541/1]; NSF [AST-1613536, AST-1815403]; U.S. Department of Energy, National Nuclear Security Administration [DE-AC52-07NA27344]; [GO-12009]