MgAl burning chain in M 54: the globular cluster-like properties of a nuclear star cluster

D. A. Alvarez Garay, A. Mucciarelli, P. Ventura +2

In this study, we present the chemical abundances of Fe, Mg, Al, Si, and K for a sample of 233 likely member stars of M 54. All the stars were observed with the FLAMES high-resolut…