Introduction

GalIMF stands for the Galaxy-wide Initial Mass Function. It is a Python 3 module that allows users to compute galaxy-wide initial stellar mass functions based on locally derived empirical constraints following the IGIMF theory (see, e.g., Weidner et al. 2013; Kroupa et al. 2013).

The module is described in Yan, Jerabkova, Kroupa (2017).

Documentation

This is the documentation for different version of GalIMF.

Versions available:

• Version 1.0.0 is the original version developed for Yan, Jerabkova, Kroupa (2017) where the galaxy-wide IMF of a single star formation epoch (during about 10 Myr) is calculated by galIMF_version_1.0.py. Later the version 1.0.0 was updated up to 1.0.5 without any significant change on the output of the code. The only major modification is to change the IMF metal dependence parameter from the iron abundance, [Fe/H], to the total metallicity, [M/H], indicating that the IMF variation depend on general or total metallicity instead of solely on the iron abundance. The original version applying [Fe/H] follows the formulation in Marks et al. 2012 (MNRAS.422.2246M) correctly but the author of this paper (through private communication) actually consider the [Fe/H] to be a representative of [M/H]. It makes more sense that all metal element should have a similar effect (if not an identical effect) to the IMF variation.
• 1.1.0 is the latest test version (🚧 under construction 🚧). The newly added model, galaxy_evol.py, adopt the IGIMF for the single star formation epoch to the galaxy evolution over the 10 Gyr timescale and result in a self-consistent evolution of galaxy-wide IMF, mass components, and metal abundances.

Check out the gallery for potential usage.

Citing GalIMF

GalIMF is developed by our group with a large amount of effort. If GalIMF contributes to a project that leads to a scientific publication, please acknowledge this work by citing the project. You can use this ready-made citation entry.