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Vertical Metallicity Gradient of the Galaxy Based on UBV Starcount Data
Published online by Cambridge University Press: 26 July 2016
Abstract
The spatial distribution of metal abundance in the Galaxy has been analyzed using the UBV starcount data recently obtained in two high-latitude regions of the North Galactic Pole (NGP) and Selected Area 54 (SA54).
A least-squares analysis was performed to determine the vertical metallicity gradient for each of the thin and thick disk components that gives a reasonable fit to the observed U-B and B-V colour distributions to V = 18 mag. The most probable value of the vertical gradient is obtained as d[Fe/H]/dz = −0.5 kpc−1 for the thin disk, and −0.1 kpc−1 for the thick disk.
- Type
- Part Nine: Galactic Structure
- Information
- Symposium - International Astronomical Union , Volume 161: Astronomy from Wide-Field Imaging , 1994 , pp. 420 - 422
- Copyright
- Copyright © Kluwer 1994