The Pristine survey - XXVIII. Journey to the Galactic outskirts: Mapping the outer halo red giant stars down to the very metal-poor end

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Volume 706 (February 2026)

A&A, 706 (2026) A195

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Table 3

Mean μ, standard deviation σ, and component weights, ω, of the three GMM components for the MDFs seen in Figure 14.

Distance bin (kpc)	μ₁	μ₂	μ₃	σ₁	σ₂	σ₃	ω₁	ω₂	ω₃
3 < d_hc < 4	−1.94	−1.27	−0.64	0.33	0.21	0.17	0.12	0.26	0.62
	−1.94	−1.27	−0.64	0.33	0.21	0.17	0.12	0.26	0.62
4 < d_hc < 6	−1.96	−1.28	−0.69	0.37	0.23	0.21	0.15	0.34	0.50
	−1.96	−1.28	−0.69	0.37	0.22	0.21	0.16	0.35	0.50
6 < dhc < 10	−2.17	−1.38	−0.75	0.41	0.24	0.25	0.24	0.41	0.34
	−2.17	−1.38	−0.76	0.41	0.24	0.25	0.24	0.41	0.34
10 < d_hc < 22	−2.11	−1.35	−0.78	0.38	0.22	0.27	0.18	0.42	0.40
	−2.13	−1.37	−0.82	0.38	0.22	0.28	0.23	0.45	0.32
22 < d_hc < 45	−2.12	−1.35	−0.74	0.41	0.24	0.32	0.18	0.48	0.34
	−2.17	−1.40	−0.86	0.39	0.23	0.31	0.25	0.48	0.27
45 < dhc < 101	−2.14	−1.43	−0.85	0.44	0.20	0.20	0.23	0.42	0.35
	−2.22	−1.51	−1.01	0.43	0.26	0.38	0.36	0.45	0.18

Notes. The values in italics shows μ, σ and ω when no weights have been applied. ‘1’ refers to the metal-poor GMM component, ‘2’ to the middle component, and ‘3’ to the metal-rich component. The total GMMs are shown in Figure 15.

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