The Gaia-ESO survey: the non-universality of the age–chemical-clocks–metallicity relations in the Galactic disc

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Volume 639 (July 2020)

A&A, 639 (2020) A127

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Table 6.

Multivariate linear regression parameters.

[A/B]	c	x₁	x₂	Δc	Δx₁	Δx₂	adj−R²	c′
[Y/Mg]	0.161	0.155	−0.031	0.009	0.028	0.002	0.80	5.245	5.057	−32.546
[Y/Al]	0.172	0.028	−0.035	0.009	0.029	0.002	0.78	4.954	0.796	−28.877
[Y/TiII]	0.132	0.146	−0.026	0.008	0.026	0.002	0.78	5.026	5.591	−38.219
[Y/TiI]	0.116	0.185	−0.025	0.008	0.024	0.001	0.81	4.597	7.326	−39.514
[Y/Ca]	0.099	0.142	−0.020	0.007	0.020	0.001	0.79	5.000	7.143	−50.462
[Y/Sc]	0.137	0.052	−0.026	0.009	0.029	0.002	0.67	5.304	2.017	−38.649
[Y/Si]	0.135	0.076	−0.025	0.008	0.025	0.001	0.75	5.311	3.003	−39.325
[Y/V]	0.116	−0.020	−0.024	0.008	0.026	0.002	0.66	4.869	−0.852	−41.921
[Y/Co]	0.163	−0.061	−0.029	0.009	0.029	0.002	0.67	5.699	−2.146	−35.018
[Sr/Mg]	0.184	0.218	−0.030	0.010	0.032	0.002	0.77	6.129	7.276	−33.401
[Sr/Al]	0.194	0.089	−0.034	0.010	0.031	0.002	0.77	5.737	2.631	−29.532
[Sr/TiI]	0.139	0.248	−0.025	0.009	0.028	0.002	0.78	5.655	10.103	−40.753
[Sr/TiII]	0.154	0.209	−0.025	0.010	0.031	0.002	0.74	6.052	8.203	−39.268
[Y/Zn]	0.170	−0.075	−0.029	0.009	0.028	0.002	0.68	5.853	−2.595	−34.370
[Sr/Zn]	0.194	−0.006	−0.029	0.010	0.032	0.002	0.65	6.819	−0.220	−35.072
[Sr/Si]	0.159	0.139	−0.025	0.010	0.031	0.002	0.70	6.341	5.553	−39.994
[Zn/Fe]	−0.065	0.061	0.012	0.006	0.019	0.001	0.42	5.481	−5.180	84.381

Notes. Coefficients c, x₁, and x₂ of the relations [A/B] = c + x₁ ⋅ [Fe/H] + x₂ ⋅ Age, where [Fe/H] and age are the independent variables. Δc, Δx₁, and Δx₂ are the uncertainties on the coefficients. c′, , and are the coefficients of the inverted stellar dating relation . Finally, adj−R² is the adjusted R² parameter.

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