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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; Sharon, Keren; Fox, Carter; Coe, Dan; Jauzac, Mathilde; Strait, Victoria; Edge, Alastair; Acebron, Ana; Andrade-Santos, Felipe; Avila, Roberto J.; Bradač, Maruša; Bradley, Larry D.; Carrasco, Daniela; Cerny, Catherine; Cibirka, Nathália; Czakon, Nicole G.; Dawson, William A.; Frye, Brenda L.; Hoag, Austin T.; Huang, Kuang-Han; Johnson, Traci L.; Jones, Christine; Kikuchihara, Shotaro; Lam, Daniel; Livermore, Rachael; Lovisari, Lorenzo; Mainali, Ramesh; Ogaz, Sara; Ouchi, Masami; Paterno-Mahler, Rachel; Roederer, Ian U.; Ryan, Russell E.; Salmon, Brett; Sendra-Server, Irene; Stark, Daniel P.; Toft, Sune; Trenti, Michele; Umetsu, Keiichi; Vulcani, Benedetta; Zitrin, Adi

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


Authors

Guillaume Mahler

Keren Sharon

Carter Fox

Dan Coe

Victoria Strait

Ana Acebron

Felipe Andrade-Santos

Roberto J. Avila

Maruša Bradač

Larry D. Bradley

Daniela Carrasco

Catherine Cerny

Nathália Cibirka

Nicole G. Czakon

William A. Dawson

Brenda L. Frye

Austin T. Hoag

Kuang-Han Huang

Traci L. Johnson

Christine Jones

Shotaro Kikuchihara

Daniel Lam

Rachael Livermore

Lorenzo Lovisari

Ramesh Mainali

Sara Ogaz

Masami Ouchi

Rachel Paterno-Mahler

Ian U. Roederer

Russell E. Ryan

Brett Salmon

Irene Sendra-Server

Daniel P. Stark

Sune Toft

Michele Trenti

Keiichi Umetsu

Benedetta Vulcani

Adi Zitrin



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 ${\theta }_{E}\simeq 36^{\prime\prime} $ at z = 9 and a mass projected within 200 kpc of ${M}_{(200\mathrm{kpc})}={1.78}_{-0.03}^{+0.01}\times {10}^{14}$ M ${}_{\odot }$. 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.

Citation

Mahler, G., Sharon, K., Fox, C., Coe, D., Jauzac, M., Strait, V., …Zitrin, A. (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), Article 96. https://doi.org/10.3847/1538-4357/ab042b

Journal Article Type Article
Acceptance Date Jan 31, 2019
Online Publication Date Mar 7, 2019
Publication Date Mar 7, 2019
Deposit Date Mar 27, 2019
Publicly Available Date Mar 27, 2019
Journal Astrophysical Journal
Print ISSN 0004-637X
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 873
Issue 1
Article Number 96
DOI https://doi.org/10.3847/1538-4357/ab042b
Public URL https://durham-repository.worktribe.com/output/1299937

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