# Homogeneous Models

Setting the model_type parameter of the &model namelist group to 'HOM' tells the frontend to create a homogeneous (uniform density) stellar model, equivalent to a polytrope with index $$n=0$$. Because the structure of these model can be computed analytically, there is no need to read from an external file.

The Gamma_1 parameter of the &model namelist group controls the first adiabatic index of the model, while the n, s and grid_type parameters control the model grid. See the Stellar Model Parameters section for further details.