Infrared photometry and CaT spectroscopy of the most metal-poor in-situ globular cluster VVV-CL001

W. Haro Moya, C. Moni Bidin, M. C. Parisi +11

Globular clusters in the Galactic bulge are difficult to study due to high extinction and severe crowding. VVV-CL001 is an old, metal-poor, and fast cluster in the inner bulge, who…