Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-11-15
Astron.Nachr. 999 (2006) 1-6
Astronomy and Astrophysics
Astrophysics
12 pages, 6 figures and 4 tables, accepted for publication in Astronomische Nachrichten
Scientific paper
10.1002/asna.200610709
We estimated the Galactic model parameters from the SDSS data reduced for two fields in the anti-centre direction of the Galaxy, $l= 180^{o}$, and symmetric relative to the Galactic plane, $b=+45^{o}$ and $b=-45^{o}$. The large size of each field, 60 deg$^{2}$, and the faint limiting apparent magnitude, g=22, give us the chance to determine reliable parameters for three components, thin and thick discs and halo, in the north and south hemispheres of the Galaxy, except the scalelengths for two discs which are adopted from Juri\'c et al. (2005). Metallicities were evaluated by a recent calibration for SDSS, and absolute magnitudes of stars with $4
Ak S.
Bilir Selcuk
Buser Roland
Karaali Salih
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