Chemical properties of bulge globular clusters from CaT spectroscopy

Abstract

It has been recognized for a long time that our Galaxy contains at least two populations of Globular Clusters: one associated with the halo and the other with the Disk/Bulge of the Milky Way (BGC). Both populations strongly trace the chemical and dynamic properties of their respective Galactic components. While the Globular Clusters of the halo have been studied in great detail, the BGC have been relatively neglected, mainly due to the high interstellar reddening. The Vista Variables in the Via Lactea survey (VVV) has been an important advance for the infrared study of the Galaxy’s BGC system. However, there are two fundamental parameters of these objects that the VVV can not provide with the required precision: radial velocities and metallicities.