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First Stars III
Contact:
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Poster
Title: Cosmic stellar relics in the Galactic halo Author(s): Stefania Salvadori Abstract: Metal poor stars represent the living fossils of the first stellar generations. The metallicity distribution functions (MDFs) of long living metal poor stars are observed both in the Galactic halo and in nearby dwarf galaxies, satellites of the Milky Way. Using a Monte Carlo method based on the semi-analytical EPS formalism, we have reconstruct the merger history of the Galaxy and followed the chemical evolution and the stellar population history along the hierarchical tree. Such approach allows to compare the observational properties of the Milky Way with model results, exploring different aspects of undetectable high redshift processes. In particular, by matching model predictions to the observed MDF of metal poor stars in the Galactic halo, we have studied the relevance and the consequences of supernova feedback in galaxy evolution and we have explored some of the properties of first stars, such as the Initial Mass Function and the critical metallicity for low-mass star formation.
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