Release Notes

Version 1.0 (Public Release)

Release Date: [Date of release]

This is the initial public release of GalfitS.

New Features:

  • Core Fitting Engine

    Simultaneous morphological and SED fitting of galaxy components, support for multiple imaging bands and optional spectroscopic data, and a JAX-based backend for high-performance computing on CPUs and GPUs.

  • Modeling Capabilities

    Library of 2D profiles (Sersic, Ferrer, edge-on disk, Gaussian ring, and more), Fourier modes for non-axisymmetric features, SPS models with multiple SFHs, AGN models (continuum, lines, torus), and foreground star modeling.

  • Optimization and Sampling

    Multiple fitting backends (jaxopt, dynesty, evosax), flexible parameter constraints via external files, and support for astrophysical priors.

  • Data Handling

    Automated image cutout, sky subtraction, mask generation, empirical PSF construction, and support for astropy FITS files with WCS.

  • Usability

    Command-line interface, detailed .lyric configuration files, and plotting utilities for residuals, model SEDs, and SFHs.

  • Documentation

    Initial public documentation for installation, quickstart, and configuration.

Known Issues:

  • The documentation is still under development. Some sections may be incomplete.

  • Error handling for invalid configuration file parameters could be more verbose.

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Future releases will focus on expanding the model library, improving performance, and enhancing the user interface and documentation.