The bottleneck of the CNO burning and the age of the Globular Clusters

G. Imbriani, H. Costantini, A. Formicola +27

The transition between the Main Sequence and the Red Giant Branch in low mass stars is powered by the onset of the CNO burning, whose bottleneck is the ${}^{14}$N(p,$\gamma {)}^{15}$O. The L…