On the Correlation Between Space Velocity and Metallicity for Nearby F, G, K Stars

Details On the Correlation Between Space Velocity and Metallicity for Nearby F, G, K Stars On the Correlation Between Space Velocity and Metallicity for Nearby F, G, K Stars

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..938..190v&link_type=abstract

SPECTRAL LINE SHAPES IN ASTROPHYSICS: VI Serbian Conference on Spectral Line Shapes in Astrophysics (VI SCSLSA). AIP Conference

Astronomy and Astrophysics

Astrophysics

1

Normal Stars : General Or Individual, Kinematics, Dynamics, And Rotation

Scientific paper

A sample consisting of 1040 stars, mainly dwarfs of late spectral types, from the solar neighbourhood is studied. Among various spectroscopic data available for all of them we use the line-of-sight velocity and metallicity. A clear correlation between these two quantities is found. Based on it we establish the fractions of galactic subsystems in the sample. It is found: 93% for the thin disc, 6% for the thick disc and 1% for the halo. The halo stars are in the present sample the most easy to be separated, they are the metal-poorest in the sample. For the thin disc the velocity ellipsoid is determined.

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