Chemical enrichment in galaxies
|Date||6 November 2019|
|Time||11:00 - 12:00|
The chemical evolution of the Universe is governed by the nucleosynthesis contribution from stars, which in turn is determined primarily by the initial stellar mass. In this talk I will highlight key outstanding questions related to stellar nucleosynthesis and chemical enrichment. I will then discuss new results from three separate but related projects: 1) the nucleosynthesis contribution from hypernovae at the earliest times; and 2) the chemical evolution of the heaviest elements, which requires low-mass evolved giant stars, colliding neutron stars and perhaps other exotic scenarios such as magneto rotationally induced supernovae in order to explain all elements; and finally 3) very metal-rich stellar models and their implications for the chemical evolution of galaxies in the distant future.