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

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.

Automated summary

This article presents a strong-lens model of SMACS J0723.3-7327, which was included in the RELICS Hubble Space Telescope (HST) treasury program. The model products and related information were made publicly available in 2017. The model used Lenstool and 25 multiple images of eight sources without spectroscopic redshifts, resulting in an image-plane rms of 0.58.