Published online by Cambridge University Press: 19 July 2016
A brief overview is presented of the s-process of nucleosynthesis. Special emphasis is put on some of its nuclear physics aspects, and in particular on the uncertainties that still affect the rates of the 13C(α,n)16O and 22Ne(α,n)25Mg neutron producing reactions. We also briefly review the so-called “classical” s-process model, and put it in perspective with recent s-process calculations conducted in the framework of detailed models for massive stars or for thermally pulsing AGB stars.