Physics
Scientific paper
Aug 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997esasp.402..489h&link_type=abstract
Proceedings of the ESA Symposium `Hipparcos - Venice '97', 13-16 May, Venice, Italy, ESA SP-402 (July 1997), p. 489-494
Physics
1
Scientific paper
The Hipparcos Catalogue provides an accurate and extensive sampling of the solar neighbourhood HR diagram. The morphology of this diagram depends on selection criteria of the catalogue such as the limiting magnitude, and on the characteristics of the stellar populations near the Sun (space density, metallicity, star formation rate, etc). We present our first results on the local stellar populations, obtained from the study of a well defined, accurate (but restricted) sample. Using a sample of G and K dwarfs, we define the local metallicity distribution of long-lived stars in the solar neighbourhood, and discuss the resulting metallicity distribution and the kinematic properties of the sample. These results will be used in a model of the local galactic stellar populations. This model is briefly presented, and will be used to analyse the accurate multidimensional data now available for the Hipparcos survey stars.
Gomez Ana E.
Haywood Misha
Meillon L.
Palasi J.
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