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http://hdl.handle.net/20.500.12386/28942
Title: | RELICS: High-resolution Constraints on the Inner Mass Distribution of the z = 0.83 Merging Cluster RXJ0152.7-1357 from Strong Lensing | Authors: | 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. LOVISARI, LORENZO 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 Vulcani, Benedetta |
Issue Date: | 2019 | Journal: | THE ASTROPHYSICAL JOURNAL | Number: | 874 | Issue: | 2 | First Page: | 132 | 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 arcmin<SUP>2</SUP>, 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. | URI: | http://hdl.handle.net/20.500.12386/28942 | URL: | https://iopscience.iop.org/article/10.3847/1538-4357/ab0adf | ISSN: | 0004-637X | DOI: | 10.3847/1538-4357/ab0adf | Bibcode ADS: | 2019ApJ...874..132A | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
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Acebron_2019_ApJ_874_132.pdf | Pdf editoriale | 2.06 MB | Adobe PDF | View/Open |
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