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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28019
Title: RELICS: Strong Lens Models for Five Galaxy Clusters from the Reionization Lensing Cluster Survey
Authors: Cerny, Catherine
Sharon, Keren
Andrade-Santos, Felipe
Avila, Roberto J.
Bradač, Maruša
Bradley, Larry D.
Carrasco, Daniela
Coe, Dan
Czakon, Nicole G.
Dawson, William A.
Frye, Brenda L.
Hoag, Austin
Huang, Kuang-Han
Johnson, Traci L.
Jones, Christine
Lam, Daniel
LOVISARI, LORENZO
Mainali, Ramesh
Oesch, Pascal A.
Ogaz, Sara
Past, Matthew
Paterno-Mahler, Rachel
Peterson, Avery
Riess, Adam G.
Rodney, Steven A.
Ryan, Russell E.
Salmon, Brett
Sendra-Server, Irene
Stark, Daniel P.
Strolger, Louis-Gregory
Trenti, Michele
Umetsu, Keiichi
Vulcani, Benedetta 
Zitrin, Adi
Issue Date: 2018
Journal: THE ASTROPHYSICAL JOURNAL 
Number: 859
Issue: 2
First Page: 159
Abstract: Strong gravitational lensing by galaxy clusters magnifies background galaxies, enhancing our ability to discover statistically significant samples of galaxies at {\boldsymbol{z}}> 6, in order to constrain the high-redshift galaxy luminosity functions. Here, we present the first five lens models out of the Reionization Lensing Cluster Survey (RELICS) Hubble Treasury Program, based on new HST WFC3/IR and ACS imaging of the clusters RXC J0142.9+4438, Abell 2537, Abell 2163, RXC J2211.7-0349, and ACT-CLJ0102-49151. The derived lensing magnification is essential for estimating the intrinsic properties of high-redshift galaxy candidates, and properly accounting for the survey volume. We report on new spectroscopic redshifts of multiply imaged lensed galaxies behind these clusters, which are used as constraints, and detail our strategy to reduce systematic uncertainties due to lack of spectroscopic information. In addition, we quantify the uncertainty on the lensing magnification due to statistical and systematic errors related to the lens modeling process, and find that in all but one cluster, the magnification is constrained to better than 20% in at least 80% of the field of view, including statistical and systematic uncertainties. The five clusters presented in this paper span the range of masses and redshifts of the clusters in the RELICS program. We find that they exhibit similar strong lensing efficiencies to the clusters targeted by the Hubble Frontier Fields within the WFC3/IR field of view. Outputs of the lens models are made available to the community through the Mikulski Archive for Space Telescopes.
URI: http://hdl.handle.net/20.500.12386/28019
URL: https://iopscience.iop.org/article/10.3847/1538-4357/aabe7b
ISSN: 0004-637X
DOI: 10.3847/1538-4357/aabe7b
Bibcode ADS: 2018ApJ...859..159C
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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