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RELICS: High-resolution Constraints on the Inner Mass Distribution of the z = 0.83 Merging Cluster RXJ0152.7-1357 from Strong Lensing

Journal
Date Issued
2019
Author(s)
Acebron, Ana
•
Alon, May
•
Zitrin, Adi
•
Mahler, Guillaume
•
Coe, Dan
•
Sharon, Keren
•
Cibirka, Nathália
•
Bradač, Maruša
•
Trenti, Michele
•
Umetsu, Keiichi
•
Andrade-Santos, Felipe
•
Avila, Roberto J.
•
Bradley, Larry
•
Carrasco, Daniela
•
Cerny, Catherine
•
Czakon, Nicole G.
•
Dawson, William A.
•
Frye, Brenda
•
Hoag, Austin T.
•
Huang, Kuang-Han
•
Johnson, Traci L.
•
Jones, Christine
•
Kikuchihara, Shotaro
•
Lam, Daniel
•
Livermore, Rachael C.
•
•
Mainali, Ramesh
•
Oesch, Pascal A.
•
Ogaz, Sara
•
Ouchi, Masami
•
Past, Matthew
•
Paterno-Mahler, Rachel
•
Peterson, Avery
•
Ryan, Russell E.
•
Salmon, Brett
•
Sendra-Server, Irene
•
Stark, Daniel P.
•
Strait, Victoria
•
Toft, Sune
•
DOI
Abstract
Strong gravitational lensing (SL) is a powerful means of mapping the distribution of dark matter. In this work, we perform an SL analysis of the prominent X-ray cluster RXJ0152.7-1357 (z = 0.83, also known as CL0152.7-1357) in Hubble Space Telescope images, taken in the framework of the Reionization Lensing Cluster Survey (RELICS). On top of a previously known z = 3.93 galaxy multiply imaged by RXJ0152.7-1357, for which we identify an additional multiple image, guided by a light-traces-mass approach, we identify seven new sets of multiply imaged background sources lensed by this cluster, spanning the redshift range [1.79-3.93]. A total of 25 multiple images are seen over a small area of ∼0.4 arcmin2, allowing us to put relatively high-resolution constraints on the inner matter distribution. Although modestly massive, the high degree of substructure, together with its very elongated shape, makes RXJ0152.7-1357 a very efficient lens for its size. This cluster also comprises the third-largest sample of z ∼ 6-7 candidates in the RELICS survey. Finally, we present a comparison of our resulting mass distribution and magnification estimates with those from a Lenstool model. These models are made publicly available through the Mikulski Archive for Space Telescopes.
Volume
874
Issue
2
Start page
132
Uri
Url
Issn Identifier
0004-637X
Ads BibCode
2019ApJ...874..132A
Rights
open.access
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