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Assembling the Milky Way

Le 20 septembre 2019
De 10h30 à 12h00

Florent Renaud

Lund

 

In the Gaia era, and with more and more complete surveys, the assembly of the Milky Way is being scrutinized with an always increasing accuracy. The kinematic and chemical properties of stellar populations are analyzed with the aim of reconstructing the formation history of the Galaxy. In this context, a major topic of interest is the role of galaxy mergers in driving the observed diversity of stellar populations. A number of cosmological simulations are currently attempting to retrieve these properties to propose an holistic formation scenario of our galaxy. In this talk, I will present a new cosmological zoom-in simulation at parsec resolution. I will use it for a detailed analysis of the signatures of mergers in the chemical abundances of the stellar populations, as opposed to in situ formation and intrinsic evolution. I will particularly present a new scenario for the simultaneous formation of the outer and inner thin disks.

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