Small Python package to interpolate pre-supernova files from MESA or KEPLER to Aenus format. The package will generate seven files:

• Heger.pars: Fortran namelist with the number of radius cells;
• initial_model.x.dat: 4 column, cell number, left cell radius, central cell radius and right cell radius;
• initial_model.y.dat: two columns and one lines, representing the angular dimension;
• nuclei.dat: matter composition of the model
• nuclei.pars: Fortran namelist containing the information on the matter composition;
• star.dat: thermodynamics variables of the model;
• star.pars: model information, such as maximum and minimum radius, number of grid cells and enclosed mass.

The following Python package is mandatory to run the script:

• NumPy

Before starting to use the package make sure that the original presupernova model is made of just one file. Running

python generate_presn_model.py --model-path /path/to/model

will produce the seven files mentioned above with 16000 radial cells, from 0 to $10^{13}$ cm in logscale, with the first cell being $8\cdot10^{4}$. To modify the parameters please run

python generate_presn_model.py -h

The thermodynamics quantities appearing in the star.dat are, in order:

The composition quantities appearing in the composition file are the 20 representative species of nuclei.