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Kinematical & Chemical Characteristics of the Thin and Thick Disks

Published online by Cambridge University Press:  01 June 2008

Rosemary F. G. Wyse
Rosemary F. G. Wyse*
Affiliation:
Department of Physics & Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA email: [email protected]
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Abstract

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I discuss how the chemical abundance distributions, kinematics and age distributions of stars in the thin and thick disks of the Galaxy can be used to decipher the merger history of the Milky Way, a typical large galaxy. The observational evidence points to a rather quiescent past merging history, unusual in the context of the ‘consensus’ cold-dark-matter cosmology favoured from observations of structure on scales larger than individual galaxies.

Keywords

Galaxy: diskGalaxy: evolutionGalaxy: formationGalaxy: stellar contentGalaxy: structurecosmology: dark matter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Issue S254: The Galaxy Disk in Cosmological Context , June 2008 , pp. 179 - 190
Copyright
Copyright © International Astronomical Union 2009

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