RELICS: A Strong-lens Model of SMACS J0723.3-7327

Abstract

We present the details of a strong-lens model of SMACS J0723.3-7327, which was made public as part of the data and high-level science products (HLSP) release of the RELICS Hubble Space Telescope (HST) treasury program (Reionization Lensing Cluster Survey; GO-14096, PI: Coe). The model products were made available on the Mikulski Archive for Space Telescopes via 10.17909/T9SP45 in 2017. Here, we provide the list of constraints that were used in the HST-based RELICS lens model, as well as other information related to our modeling choices, which were not published with the data and HLSP release. This model was computed with Lenstool , used a total of 25 multiple images of eight sources, with no spectroscopic redshifts. The image-plane rms was 0.″58.

Keywords

• Gravitational lensing
• Galaxy clusters