EVOLUTION OF THE GALACTIC DISK: FOCUS ON THE SOLAR NEIGHBOURHOOD

  • ANDERSEN J. (Astronomical Observatory, NBIfAFG, Copenhagen University) ;
  • NORDSTROM B. (Astronomical Observatory, NBIfAFG, Copenhagen University) ;
  • OLSEN E. H. (Astronomical Observatory, NBIfAFG, Copenhagen University) ;
  • MAYOR M. (Observatoire de Geneve) ;
  • PONT F. (Observatoire de Geneve)
  • Published : 1996.12.01

Abstract

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.

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