Monday

We present our comprehensive campaign to study stellar populations in the Galactic bulge using the well-established means of Strömgren photometry. To this end, we obtained photometry with the Hubble Space Telescope’s (HST) Wide Field Camera 3 and Advanced Camera for Surveys bands of the bulge globular cluster NGC 6528 in the filters F395N, F410M, F467M, and F547M. By using photometric metallicity sensitive indices, we were able to estimate the stellar metallicity of horizontal branch, red giant branch and main sequence stars. The age of the cluster was determined using Dartmouth isochrones. We also include an estimation of the cluster's differential reddening. The main aim of our study is to test for the actual presence of a young, metal-rich population and identifying candidate metal-poor stars in the bulge, which ultimately lets us constrain the age range of the entire cluster population and its surrounding field.