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Project duration:  1 year.  Potential to grow into a thesis project (see below)

PI: Annalisa  Dr. Annalisa Calamida (INS/WFC3), Office: RW303, Email: calamida@stsci.edu, Phone: 667 218 6428

Galactic globular clusters (GGCs) have long been considered the most simple stellar populations, with their stars located at the same distance, with typically the same extinction, and the same bona fide age and chemical composition. However, during the last two decades, high-resolution spectroscopic studies have shown that most GGCs display a large spread of light elements and anti-correlations. This evidence suggests the presence of more than one generation of stars in these systems, with the younger generation born from a stellar medium enriched by the material ejected by the previous one.

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