The computation of the models and isochrones included in this database has required a large effort in terms of time spent and resources. The number of evolutionary tracks is very large and extreme care is required to compute the various sets of isochrones that we make publicly available.
We have just realized that some of the tracks used to calculate the alpha-enhanced isochrones with atomic diffusion on this website, were instead part of a set of tracks we had calculated without diffusion. To rectify this situation, we are temporarily putting offline the alpha-enhanced section of this website, to make sure the isochrones we provide are calculated with the correct set of tracks.

This is an unfortunate occurrence, and we sincerely apologize to all users of our models.

the BaSTI Team