On the age of field halo stars (Jofre & Weiss, 2011)

Details On the age of field halo stars (Jofre & Weiss, 2011) On the age of field halo stars (Jofre & Weiss, 2011)

2012-01-09

arxiv.org/abs/1201.1708v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

To appear in the Proceedings of the Conference "Assembling the Puzzle of the Milky Way", held at Le Grand Bornand, April 2011,

Scientific paper

A study of stellar ages of a sample from the Sloan Digital Sky Survey (SDSS) is presented. The results are consolidated with a set of globular clusters (GCs) and show that this stellar sample is composed by one dominant population of 10-12 Gyr old. This supports the Eggen's scenario claiming that the inner halo of the Milky Way formed rapidly, probably during the collapse of the proto-Galactic cloud.

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