Computer Science
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ycat.5117....0n&link_type=abstract
VizieR On-line Data Catalog: V/117A. Originally published in: 2004A&A...418..989N; 2007A&A...475..519H
Computer Science
2
Stars: F-Type, Stars: G-Type, Abundances: [Fe/H], Positional Data, Photometry: Uvby, Radial Velocities, Stars: Ages, Stars: Distances, Stars: Masses, Space Velocities, Effective Temperatures
Scientific paper
We present and discuss new determinations of metallicity, rotation, age, kinematics and Galactic orbits for a complete, magnitude-limited, and kinematically unbiased sample of 16682 nearby F and G dwarf stars. Our ~63000 new, accurate radial-velocity observations for nearly 13500 stars allow identification of most of the binary stars in the sample, and together with published uvby-{beta} photometry, Hipparcos parallaxes, Tycho-2 proper motions, and a few earlier radial velocities, complete the kinematic information for 14139 stars. These high-quality velocity data are supplemented by effective temperatures and metallicities newly derived from recent and/or revised calibrations. The remaining stars either lack Hipparcos data or have fast rotation. A major effort has been devoted to the determination of new isochrone ages for all stars for which this is possible. Particular attention has been given to a realistic treatment of statistical biases and error estimates, as standard techniques tend to underestimate these effects and introduce spurious features in the age distributions.
(3 data files).
Andersen Jeppe J.
Holmberg Johan
Jorgensen B. R.
Mayor Marcel
Mowlavi Nami
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