Deep HST Imaging in 47 Tuc and NGC 6397: WFC3 Panchromatic Imaging of 47 Tuc

In Cycle 17 our team was allocated 121 HST orbits to dissect the best studied globular cluster in the sky, 47 Tucanae. The HST ACS and WFC3 observations in this study represent one of the deepest images ever obtained for a nearby stellar population. In this poster, we present high-resolution UV and near-infrared imaging of the complete stellar populations of 47 Tuc over a wide field of view spanning a 180 degree azimuthal range and >10 pc radial range in the star cluster. The combined WFC3/UVIS and IR observations in each of these fields extends from well below the hydrogen burning limit in the red, up through the main sequence to the brightest giants in post main-sequence evolution in the visible, and down to the white dwarf cooling sequence in the blue. This complete stellar picture of a globular cluster has revealed several new features of the color-magnitude diagram and represents a comprehensive data base to test stellar evolution models in exquisite detail. In addition to the primary focus of studying 47 Tuc, our imaging penetrates through the star cluster to reveal a rich population of background giants and low mass dwarfs belonging to the distant Small Magellanic Cloud.