Résumé / Abstract Seminaire_IAP
« How the Milky Way's Disk was Assembled »

Hans-Walter Rix
Max-Planck-Institut für Astronomie (Heidelberg, Allemagne)

What if we could see the global structure of the Milky Way's stellar disk(s) looking only at stellar populations of a given age or abundance? This could be the most direct route to delineating the build-up of a prototypical large galaxy. We have just solved the problem of how to model rigorously the complex selection functions of large ground-based spectroscopic surveys of the Galaxy (such as SDSS/SEGUE), which now enables this approach.
I will show how the global (radial and vertical) structure of the Milky Way's disk changes as a function of stellar age and abundance, and discuss what this means for the build-up of the Milky Way disk and its evolution through internal and external processes, such as radial migration and satellite infall, respectively.
vendredi 9 décembre 2011 - 11:00
Salle des séminaires Évry Schatzman, Institut d'Astrophysique de Paris
Page web du séminaire / Seminar's webpage