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html20) http://www.rssd.esa.int/gaia/

Galactic Archaeology: Deciphering Galaxy
Formation from Ancient Stars in the
Backyard
Masashi CHIBA Astronomical Institute, Tohoku
University, Aoba-ku, Sendai 980ῌ8578, Japan
Abstract : Old halo stars in our neighborhood
hold fossil records of galaxy formation in theirchemical abundances and three-dimensional
kinematics, thereby providing us with invaluable
information on the Galactic past. We present
here the recent progress in our understanding ofold stellar components of the Milky Way to get
fundamental insight into galaxy formation.

./RS

2008 T 11 R