DiskFit: a code to fit simple non-axisymmetric galaxy models either to photometric images or to kinematic maps

TL;DR

DiskFit is a publicly available software tool designed to fit simple non-axisymmetric models to galaxy images and velocity fields, offering advantages over existing tools like rotcur and galfit.

Contribution

The paper introduces DiskFit version 1.2, a new software package that improves modeling of galaxy structures in photometric and kinematic data.

Findings

DiskFit provides more accurate fits than rotcur for kinematic maps.

DiskFit outperforms galfit in modeling galaxy images.

The software is publicly accessible with comprehensive documentation.

Abstract

This posting announces public availability of version 1.2 of the DiskFit software package developed by the authors, which may be used to fit simple non-axisymmetric models either to images or to velocity fields of disk galaxies. Here we give an outline of the capability of the code and provide the link to downloading executables, the source code, and a comprehensive on-line manual. We argue that in important respects the code is superior to rotcur for fitting kinematic maps and to galfit for fitting multi-component models to photometric images.