RELICS: Strong Lens Model of SMACSJ0723.3-7327

TL;DR

This paper details a strong gravitational lens model of the galaxy cluster SMACS J0723.3-7327, utilizing HST data and multiple images without spectroscopic redshifts, providing constraints and modeling specifics.

Contribution

It presents a detailed strong lens model of SMACS J0723.3-7327, including constraints and modeling choices not previously published, using Lenstool with multiple images.

Findings

Image plane RMS of 0.58 arcseconds

Model based on 8 sources with no spectroscopic redshifts

Constraints and modeling details provided for future research

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 HST treasury program (Reionization Lensing Cluster Survey; GO-14096, PI: Coe). The model products were made available on the Mikulski Archive for Space Telescopes (MAST) 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 multiple images of 8 sources, with no spectroscopic redshifts. The image plane RMS was 0".58.