Stellar Population Astrophysics (SPA) with the TNG - α-elements, lithium, sodium and aluminum in 16 open clusters

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Volume 667 (November 2022)

A&A, 667 (2022) A103

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Table 1.

Observed gradients of α-elements, and Na and Al (with NLTE correction).

Age range	R_gc	d[O/Fe]/dR_GC	d[O/Fe]/d\|z\|_GC	N_clusters
(Gyr)	(kpc)	(dex kpc⁻¹)	(dex kpc⁻¹)
All ages	Rgc < 14	0.0030 ± 0.0060	0.0506 ± 0.0271	111
Age < 2	Rcg < 14	0.0506 ± 0.0271	−0.0261 ± 0.0266	91
2 < age < 4	Rgc < 14	0.0121 ± 0.0028	0.0943 ± 0.0467	13
Age > 4	Rgc < 14	0.0006 ± 0.0160	0.0130 ± 0.0531	9

Age range	R_gc	d[Na/Fe]/dR_GC	d[Na/Fe]/d\|z\|_GC	N_clusters
(Gyr)	(kpc)	(dex kpc⁻¹)	(dex kpc⁻¹)

All ages	Rgc < 14	0.0013 ± 0.0052	0.0026 ± 0.0057	117
Age < 2	Rcg < 14	0.0064 ± 0.0058	0.0290 ± 0.0676	99
2 < age < 4	Rgc < 14	0.0227 ± 0.0103	0.0271 ± 0.1176	11
Age > 4	Rgc < 14	−0.1041 ± 0.0635	−1.0445 ± 0.2437	5

Age range	R_gc	d[Mg/Fe]/dR_GC	d[Mg/Fe]/d\|z\|_GC	N_clusters
(Gyr)	(kpc)	(dex kpc⁻¹)	(dex kpc⁻¹)

All ages	Rgc < 14	0.0099 ± 0.0017	0.0703 ± 0.0191	144
Age < 2	Rcg < 14	0.0095 ± 0.0017	0.0340 ± 0.0244	122
2 < age < 4	Rgc < 14	−0.0052 ± 0.0050	−0.0024 ± 0.0410	13
Age > 4	Rgc < 14	0.0270 ± 0.0093	0.0713 ± 0.0708	9

Age range	R_gc	d[Al/Fe]/dR_GC	d[Al/Fe]/d\|z\|_GC	N_clusters
(Gyr)	(kpc)	(dex kpc⁻¹)	(dex kpc⁻¹)

All ages	Rgc < 14	0.0074 ± 0.0039	0.0961 ± 0.0354	127
Age < 2	Rcg < 14	0.0079 ± 0.0031	0.1017 ± 0.0406	109
2 < age < 4	Rgc < 14	0.0037 ± 0.0029	0.0941 ± 0.0696	11
Age > 4	Rgc < 14	0.0188 ± 0.0075	−0.0741 ± 0.0737	7

Age range	R_gc	d[Si/Fe]/dR_GC	d[Si/Fe]/d\|z\|_GC	N_clusters
(Gyr)	(kpc)	(dex kpc⁻¹)	(dex kpc⁻¹)

All ages	Rgc < 14	−0.0011 ± 0.0017	0.0148 ± 0.0157	135
Age < 2	Rcg < 14	−0.0027 ± 0.0019	−0.0092 ± 0.0266	113
2 < age < 4	Rgc < 14	−0.0035 ± 0.0026	0.0214 ± 0.0393	13
Age > 4	Rgc < 14	−0.0089 ± 0.0030	−0.0142 ± 0.0211	9

Age range	R_gc	d[Ca/Fe]/dR_GC	d[Ca/Fe]/d\|z\|_GC	N_clusters
(Gyr)	(kpc)	(dex kpc⁻¹)	(dex kpc⁻¹)

All ages	Rgc < 14	0.0055 ± 0.0015	0.0424 ± 0.0188	135
Age < 2	Rcg < 14	0.0050 ± 0.0018	0.0547 ± 0.0250	113
2 < age < 4	Rgc < 14	0.0026 ± 0.0049	−0.0392 ± 0.0805	13
Age > 4	Rgc < 14	−0.0282 ± 0.0224	−0.1015 ± 0.0664	9

Age range	R_gc	d[Ti/Fe]/dR_GC	d[Ti/Fe]/d\|z\|_GC	N_clusters
(Gyr)	(kpc)	(dex kpc⁻¹)	(dex kpc⁻¹)

All ages	Rgc < 14	−0.0033 ± 0.0021	0.0055 ± 0.0222	150
Age < 2	Rcg < 14	−0.0027 ± 0.0025	0.0277 ± 0.0299	116
2 < age < 4	Rgc < 14	−0.0104 ± 0.0029	−0.0767 ± 0.0413	13
Age > 4	Rgc < 14	0.0030 ± 0.0198	−0.0639 ± 0.0587	8

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