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| « How the Milky Way's Disk was Assembled » |
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Hans-Walter Rix |
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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. |
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vendredi 9 décembre 2011 - 11:00 Salle des séminaires Évry Schatzman, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |