We investigate the physical properties of the progenitors of today living Milky Way-like galaxies that are visible as Damped Ly alpha Absorption systems and Ly alpha Emitters at higher redshifts (z approximate to 2.3,5.7). To this aim we use a statistical merger-tree approach that follows the formation of the Galaxy and its dwarf satellites in a cosmological context, tracing the chemical evolution and stellar population history of the progenitor halos. The model accounts for the properties of the most metal-poor stars and local dwarf galaxies, providing insights on the early cosmic star-formation. Fruitful links between Galactic Archaeology and more distant galaxies are presented.
The Infant Milky Way / Stefania, Salvadori, Ferrara, Andrea. - STAMPA. - (2012), pp. 99-105. (Intervento presentato al convegno Galactic Archaeology: Near-Field Cosmology and the Formation of the Milky Way).
The Infant Milky Way
SALVADORI, STEFANIA;
2012
Abstract
We investigate the physical properties of the progenitors of today living Milky Way-like galaxies that are visible as Damped Ly alpha Absorption systems and Ly alpha Emitters at higher redshifts (z approximate to 2.3,5.7). To this aim we use a statistical merger-tree approach that follows the formation of the Galaxy and its dwarf satellites in a cosmological context, tracing the chemical evolution and stellar population history of the progenitor halos. The model accounts for the properties of the most metal-poor stars and local dwarf galaxies, providing insights on the early cosmic star-formation. Fruitful links between Galactic Archaeology and more distant galaxies are presented.
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