Fig. 7
Distribution of the median [Fe/H] vs. r, after splitting the SDSS/SEGUE sample into the target-selection categories with more than 50 stars, located at distances from near the center to up to beyond 20 kpc (www.sdss3.org/dr9/spectra/targets.php). Overall, the metallicity decreases with distance the profile depends on the category considered, however.
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