Chemistry of globular cluster NGC6388

Our results are used to describe the multiple stellar populations, and differences or analogies with bulge field stars. Proton-capture elements indicate that a single class of first generation polluters is sufficient to reproduce both the extreme and intermediate parts of the anti-correlations among light elements O, Na, Mg, and Al, at odds with our previous results, based on a much smaller sample.

The abundance pattern of other species closely tracks the trends observed in bulge field stars. The neutron-capture elements are generally uniform ([Zr/Fe] is an exception). We do not find enhancement in n-capture elements for stars whose photometric properties would classify NGC 6388 as a type II GC.