Metal abundance gradient in the direction of the north Galactic pole

Details Metal abundance gradient in the direction of the north Galactic pole Metal abundance gradient in the direction of the north Galactic pole

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pazh...13..393b&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 13, May 1987, p. 393-398. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

1

Late Stars, Metallicity, Milky Way Galaxy, Northern Sky, Stellar Composition, Abundance, Distance, Hydrogen Clouds, Iron, K Stars

Scientific paper

The metallicities and distances of 190 F-K stars as determined from Vilnius seven-color photometry are used to estimate the variation of the metal abundance perpendicular to the galactic plane. The resulting gradient for the total sample of stars within ⪉1 kpc from the plane amounts to d[Fe/H]/dz = -0.7±0.1 kpc-1. For the disk population separately, the gradient is -0.4±0.1 kpc-1 whereas halo stars show little or no correlation of metallicity with distance. It is also found that about half of the G-K giants above 1 kpc appear to have near solar abundances.

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