pysersic: A Python package for determining galaxy structural properties via Bayesian inference, accelerated with jax

Understand

A standard practice in extragalactic population studies is the fitting of parametric models to galaxy images.

• From such fits, key structural parameters of galaxies such as total flux and effective radius (size) can be extracted.
• One of the most popular parametric forms is that of the S\'ersic profile, which is flexible enough to reasonably fit the light distribution of nearly all galaxies.
• Here we present pysersic, a Bayesian framework created to facilitate the inference of structural parameters from galaxy images.