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The kinematics and chemistry of the Sagittarius streams
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Journal Article
The kinematics and chemistry of the Sagittarius streams
2012
Overview
We selected red horizontal-branch stars along the streams of the Sagittarius dwarf galaxy (Sgr) from sdss DR7 spectroscopic data using a theoretical model. We investigate the metallicity distribution of stars in the Sgr streams. The metallicity gradient is (−1.8 ± 0.3) × 10⊃3 dex deg−1 in the first wrap of the trailing arm and (−1.5 ± 0.4) × 10−3 dex deg−1 in the first wrap of the leading arm.
Publisher
Cambridge University Press
Subject
