Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...221...65s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 221, no. 1, Aug. 1989, p. 65-77. Research supported by the Instituto Nacional
Astronomy and Astrophysics
Astrophysics
266
Interstellar Extinction, Metallicity, Stellar Color, Stellar Spectrophotometry, Ubv Spectra, F Stars, G Stars, High Speed, Late Stars, Radial Velocity
Scientific paper
The results of uvby-beta photometry of 711 high-velocity metal-poor stars are employed to obtain new (b-y)0 - beta and semiforbidden Fe/H calibrations. It is found that the interstellar color excess E(b-y) can be calculated with a standard deviation of 0.01 m for beta values as low as 2.55, and that the standard deviation of forbidden Fe/H increases from about 0.15 dex for a forbidden Fe/H abundance ratio of about -0.5 to about 0.30 dex for a forbidden Fe/H abundance ratio of about -2.5. The present calibrations have application to metal-poor, late-F, and G stars, and can be used to determine the age-metallicity-kinematic relations of halo and old disk population stars.
Nissen Poul Erik
Schuster William J.
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