The Origin of the Elements
Evan Kirby



"Metallicity" is a useful but simplified concept for describing the elemental composition of a galaxy. I will delve into the detailed elemental abundances--including Mg, Si, Ca, Ti, and Fe--of dwarf galaxies to deduce their star formation histories as a function of stellar mass. The presence of Type Ia supernova products indicates that star formation persisted for at least hundreds of Myr in even the tiniest galaxies. Other elements, like C and Li, present unexpected surprises about galactic and stellar evolution. I will suggest a radical and testable idea to explain the mysterious Li-rich red giants present in all metal-poor populations.