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Insights on the Milky Way bulge formation from the correlations between kinematics and metallicity

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Figure 1 plots the dispersion of velocity components along the line-of-sight (σ r ), the galactic longitude (σ l ) and the galactic latitude ( σ b ) as a function of [Fe /H]
Table 1. Baade’s Window velocity ellipsoid parameters. [Fe/H] N σ r σ l σ b C lr C br C lb l v θ br θ lb (dex) (km s −1 ) (km s −1 ) (km s −1 ) ( ◦ ) ( ◦ ) ( ◦ ) all 340 111 ± 4 119 ± 6 95 ± 4 −0.28 ± 0.05 0.21 ± 0.06 −0.22 ± 0.07 −38 ± 5 27 ± 7 −22 ± 6 &l
Fig. 3. Vertex deviation l v in Baade’s Window as a function of metallic- metallic-ity by bins of 0.4 dex.
Fig. 6. Dispersion of the radial velocity for the di fferent galactic lati- lati-tudes as a function of metallicity by bins of 0.4 dex.
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