The Galactic thin and thick discs in the context of galaxy formation

Details The Galactic thin and thick discs in the context of galaxy formation The Galactic thin and thick discs in the context of galaxy formation

2009-08-26

arxiv.org/abs/0908.3807v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

Contributed talk at Chemical abundances in the Universe, connecting first stars to planets, Proceedings of the International A

Scientific paper

10.1017/S1743921310000773

We have obtained high-resolution spectra and carried out a detailed elemental abundance analysis for a new sample of 899 F and G dwarf stars in the Solar neighbourhood. The results allow us to, in a multi-dimensional space consisting of stellar ages, detailed elemental abundances, and full kinematic information for the stars, study and trace their respective origins. Here we briefly address selection criteria and discuss how to define a thick disc star. The results are discussed in the context of galaxy formation.

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