Kinematical & Chemical Characteristics of the Thin and Thick Disks

Details Kinematical & Chemical Characteristics of the Thin and Thick Disks Kinematical & Chemical Characteristics of the Thin and Thick Disks

2008-09-26

arxiv.org/abs/0809.4516v1

Astronomy and Astrophysics

Astrophysics

12 pages, 4 figures; review at IAU Symposium 254, `The Galaxy Disk in Cosmological Context', Copenhagen, June 2008, eds J. And

Scientific paper

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.

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