Ioanna Koutsouridou (University of Florence): The mass and energy distribution of the first stars

Thursday 23 Jan 2025, 14:00 → 15:00 Europe/Stockholm

90103Å

Title: The mass and energy distribution of the first stars
Speaker: Ioanna Koutsouridou
Affiliation: University of Florence
Time: Thursday 23 January 2025, 1400 to 1500
Location: 90103Å

Zoom: if requested

Abstract:

The nature of the first (Pop III) stars is still a mystery and the energy distribution of the first supernovae is completely unexplored. With no direct observations of Pop III stars, researchers rely on inferring their properties by analyzing the abundance patterns of their long-lived descendants in the Milky Way (MW) and its dwarf satellites. However, stellar evolution models reveal degeneracies in the predicted Pop III metal yields, among the unknown Pop III masses and explosion energies, that can complicate these efforts. Using a state-of-the-art cosmological model for the formation of a MW-analogue, we explore how the observed frequency of Pop III descendants can be employed to break these degeneracies.