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http://hdl.handle.net/20.500.12386/28020
Title: | RELICS: A Strong Lens Model for SPT-CLJ0615-5746, a z = 0.972 Cluster | Authors: | Paterno-Mahler, Rachel Sharon, Keren Coe, Dan Mahler, Guillaume Cerny, Catherine Johnson, Traci L. Schrabback, Tim Andrade-Santos, Felipe Avila, Roberto J. Bradač, Maruša Bradley, Larry D. Carrasco, Daniela Czakon, Nicole G. Dawson, William A. Frye, Brenda L. Hoag, Austin T. Huang, Kuang-Han Jones, Christine Lam, Daniel Livermore, Rachael LOVISARI, LORENZO Mainali, Ramesh Oesch, Pascal A. Ogaz, Sara Past, Matthew Peterson, Avery Ryan, Russell E. Salmon, Brett Sendra-Server, Irene Stark, Daniel P. Umetsu, Keiichi Vulcani, Benedetta Zitrin, Adi |
Issue Date: | 2018 | Journal: | THE ASTROPHYSICAL JOURNAL | Number: | 863 | Issue: | 2 | First Page: | 154 | Abstract: | We present a lens model for the cluster SPT-CLJ0615-5746, which is the highest-redshift (z = 0.972) system in the Reionization of Lensing Clusters Survey, making it the highest-redshift cluster for which a full, strong lens model is published. We identify three systems of multiply imaged lensed galaxies, two of which we spectroscopically confirm at z = 1.358 and z = 4.013, which we use as constraints for the model. We find a foreground structure at z ∼ 0.4, which we include as a second cluster-sized halo in one of our models; however, two different statistical tests find the best-fit model consists of one cluster-sized halo combined with three individually optimized galaxy-sized halos, as well as contributions from the cluster galaxies themselves. We find the total projected mass density within r = 26.″7 (the region where the strong lensing constraints exist) to be M={2.51}<SUB>-0.09</SUB><SUP>+0.15</SUP>× {10}<SUP>14</SUP> M <SUB>☉</SUB>. If we extrapolate out to r <SUB>500</SUB>, our projected mass density is consistent with the mass inferred from weak lensing and from the Sunyaev-Zel’dovich effect (M ∼ 10<SUP>15</SUP> M <SUB>☉</SUB>). This cluster is lensing a previously reported z ∼ 10 galaxy, which, if spectroscopically confirmed, will be the highest-redshift strongly lensed galaxy known. | URI: | http://hdl.handle.net/20.500.12386/28020 | URL: | https://iopscience.iop.org/article/10.3847/1538-4357/aad239 | ISSN: | 0004-637X | DOI: | 10.3847/1538-4357/aad239 | Bibcode ADS: | 2018ApJ...863..154P | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
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Paterno-Mahler_2018_ApJ_863_154.pdf | Pdf editoriale | 2.15 MB | Adobe PDF | View/Open |
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