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The infant Milky Way

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arxiv 1204.1943 v1 pith:4J73CVHL submitted 2012-04-09 astro-ph.CO

Stefania Salvadori (1) , Andrea Ferrara (2) ((1) Kapteyn Astronomical Institute , Groningen , The Netherlands (2) Scuola Normale Superiore , Pisa , Italy) This is my paper
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keywords galaxiesdwarfmilkypropertiesabsorptionaccountsapproacharchaeology
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We investigate the physical properties of the progenitors of today living Milky Way-like galaxies that are visible as Damped Lya Absorption systems and Lya Emitters at higher redshifts (z ~ 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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