Radioactive Clocks and Thermometer in S-type Stars S. Van Eck, P. Neyskens, A. Jorissen, S. Goriely, L. Siess and B. Plez EAS Publications Series, 71-72 (2015) 339-342 Published online: 01 December 2015 DOI: 10.1051/eas/1571080