Metallicity-dependent kinematics and orbits in the Milky Way’s nuclear stellar disc

Open Access

Table 2

Characterisation of the two-Gaussian metallicity decomposition of stars with different orbits.

Orbit	Metallicity	W	[M/H]	σ [M/H]
z-tube	Rich	0.80 ± 0.05	0.19 ± 0.01	0.26 ± 0.01
	Poor	0.20 ± 0.05	−0.16 ± 0.16	0.67 ± 0.09

Chaotic	Rich	0.78 ± 0.06	0.05 ± 0.02	0.29 ± 0.03
	Poor	0.22 ± 0.06	−0.49 ± 0.43	0.73 ± 0.12

Notes. W, [M/H], and σ [M/H] correspond to the results from the GMM analysis of the two-Gaussian distribution, where W indicates the relative weight of each of the Gaussian components.

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