Hidden Population III Descendants in Ultrafaint Dwarf Galaxies
M. Rossi; Stefania Salvadori; Á. Skúladóttir; Irene Vanni; Ioanna Koutsouridou · 2025 · The Astrophysical Journal
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Abstract
Abstract The elusive properties of the first (Population III or Pop III) stars can be indirectly unveiled by uncovering their true descendants. To this end, we exploit our data-calibrated model for the best-studied ultrafaint dwarf galaxy (UFD), Boötes I, which tracks the chemical evolution (from carbon to zinc) of individual stars from their formation to the present day. We explore the chemical imprint of Pop III supernovae (SNe), with different explosion energies and masses, showing that they leave distinct chemical signatures in their descendants. We find that UFDs are strongly affected by
Abstract by M. Rossi; Stefania Salvadori; Á. Skúladóttir; Irene Vanni; Ioanna Koutsouridou, The Astrophysical Journal (2025) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.3847/1538-4357/add5e9