Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ap%26ss.265..235n&link_type=abstract
Astrophysics and Space Science, v. 265, Issue 1/4, p. 235-241 (1999).
Astronomy and Astrophysics
Astrophysics
5
Scientific paper
We describe the overall properties of a new catalogue of metallicities, ages, and galactic orbits for a large, complete sample of F and G dwarfs in the solar neighbourhood. Based on a magnitude-limited sample of ˜ 14000 stars, it is volume-complete to ˜ 40 pc. Together with the astrophysical parameters of direct relevance to models of the evolution of the disk, it will contain the basic photometric, astrometric, and radial velocity data from which they are derived. Information on duplicity is also included. The full exploitation of the data will require a lengthy analysis, in particular to assess the degree of completeness of subsamples of stars of different population types. An early result on the effects of diffusion of galactic orbits in the disk - essential for understanding the scatter in the age-metallicity diagram and estimating the birth radius of stars - is briefly illustrated.
Andersen Jeppe J.
Fux Roger
Mayor Marcel
Mowlavi Nami
Nordstrom Birgita
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