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 - Funding Information:
Support for program GO14096 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. This paper is based on observations made with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with program GO14096. Archival data are associated with programs GO12757 and GO12477. This paper includes data gathered with the 6.5 meter Magellan Telescopes located at Las Campanas Observatory, Chile. Facilities: HST, Magellan.
Funding Information:
Support for program GO14096 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. This paper is based on observations made with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.
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 - http://www.scopus.com/inward/record.url?scp=85052375673&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85052375673&partnerID=8YFLogxK
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 -