TY - JOUR
T1 - RELICS
T2 - A Strong Lens Model for SPT-CLJ0615-5746, a z = 0.972 Cluster
AU - Paterno-Mahler, Rachel
AU - Sharon, Keren
AU - Coe, Dan
AU - Mahler, Guillaume
AU - Cerny, Catherine
AU - Johnson, Traci L.
AU - Schrabback, Tim
AU - Andrade-Santos, Felipe
AU - Avila, Roberto J.
AU - Bradač, Maruša
AU - Bradley, Larry D.
AU - Carrasco, Daniela
AU - Czakon, Nicole G.
AU - Dawson, William A.
AU - Frye, Brenda L.
AU - Hoag, Austin T.
AU - Huang, Kuang Han
AU - Jones, Christine
AU - Lam, Daniel
AU - Livermore, Rachael
AU - Lovisari, Lorenzo
AU - Mainali, Ramesh
AU - Oesch, Pascal A.
AU - Ogaz, Sara
AU - Past, Matthew
AU - Peterson, Avery
AU - Ryan, Russell E.
AU - Salmon, Brett
AU - Sendra-Server, Irene
AU - Stark, Daniel P
AU - Umetsu, Keiichi
AU - Vulcani, Benedetta
AU - Zitrin, Adi
N1 - Publisher Copyright:
© 2018. The American Astronomical Society. All rights reserved..
PY - 2018/8/20
Y1 - 2018/8/20
N2 - 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 ⊙. If we extrapolate out to r 500, our projected mass density is consistent with the mass inferred from weak lensing and from the Sunyaev-Zel'dovich effect (M ∼ 1015 M ⊙). This cluster is lensing a previously reported z ∼ 10 galaxy, which, if spectroscopically confirmed, will be the highest-redshift strongly lensed galaxy known.
AB - 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 ⊙. If we extrapolate out to r 500, our projected mass density is consistent with the mass inferred from weak lensing and from the Sunyaev-Zel'dovich effect (M ∼ 1015 M ⊙). This cluster is lensing a previously reported z ∼ 10 galaxy, which, if spectroscopically confirmed, will be the highest-redshift strongly lensed galaxy known.
KW - clusters: individual (SPT-CLJ0615-5746)
KW - gravitational lensing: strong
UR - https://www.scopus.com/pages/publications/85052375673
UR - https://www.scopus.com/pages/publications/85052375673#tab=citedBy
U2 - 10.3847/1538-4357/aad239
DO - 10.3847/1538-4357/aad239
M3 - Article
AN - SCOPUS:85052375673
SN - 0004-637X
VL - 863
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 154
ER -