Journal article
Mass and Light of Abell 370: A Strong and Weak Lensing Analysis
V Strait, M Bradač, A Hoag, KH Huang, T Treu, X Wang, R Amorin, M Castellano, A Fontana, BC Lemaux, E Merlin, KB Schmidt, T Schrabback, A Tomczack, M Trenti, B Vulcani
Astrophysical Journal | IOP PUBLISHING LTD | Published : 2018
Abstract
We present a new gravitational lens model of the Hubble Frontier Fields cluster Abell 370 (z = 0.375) using imaging and spectroscopy from Hubble Space Telescope and ground-based spectroscopy. We combine constraints from a catalog of 909 weakly lensed galaxies and 39 multiply imaged sources comprised of 114 multiple images, including a system of multiply imaged candidates at z = 7.84 +0.02, to obtain a best-fit mass distribution using the cluster lens modeling code Strong and Weak Lensing United. As the only analysis of A370 using strong and weak lensing constraints from Hubble Frontier Fields data, our method provides an independent check of assumptions on the mass distribution used in other..
View full abstractGrants
Awarded by National Science Foundation
Funding Acknowledgements
Support for this work was provided by NASA through an award issued by JPL/Caltech (for SURFS UP project) and by HST/STScI HST-AR-13235, HST-AR-14280, and HST-GO-13177. Support for the Grism Lens-Amplified Survey from Space (GLASS) (HST-GO-13459) was provided by NASA through a grant from the Space Telescope Science Institute (STScI). This work utilizes gravitational lensing models produced by PIs Bradac, Richard, Natarajan & Kneib (CATS), Sharon, Williams, Keeton, and Diego. This lens modeling was partially funded by the HST Frontier Fields program conducted by STScI. STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. Lens models were obtained from the Mikulski Archive for Space Telescopes (MAST). B.V. acknowledges the support from an Australian Research Council Discovery Early Career Researcher Award (PD0028506). T.T. and X.W. acknowledge support by NASA through HST grants HST-GO-13459 and HST-GO-14280.