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EVOLUTION OF THE GALACTIC DISK: FOCUS ON THE SOLAR NEIGHBOURHOOD
ANDERSEN J.,NORDSTROM B.,OLSEN E. H.,MAYOR M.,PONT F. The Korean Astronomical Society 1996 Journal of The Korean Astronomical Society Vol.29 No.suppl1
The solar neighbourhood is the starting point for studies of the structure and evolution of the Galactic disk. Yet, our knowledge of the relative frequencies, distances, ages, chemical abundances, velocities, and birthplaces of the nearby stars is severely incomplete. We have determined complete, homogeneous, and precise such data for a kinematically unbiased sample of $\~$12,000 local F and G dwarf stars and describe a first, significant result from it.