Kinematic, elemental, and structural dependences on metallicity in the Galactic bulge

Open Access

Fig. 3

Dependences of action dispersions (defined as standard deviations) and orbital dispersions on metallicity are examined. The action dispersions of metal-poor stars are larger than those of metal-rich stars, suggesting that metal-poor stars may have multiple dynamical origins. The error bar indicates the standard error, which is given by $σ / \sqrt{N - 1}$ $\sigma /\sqrt {N - 1}$ .

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