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Table 3.

Individual abundances.

NGC 6819 M67 NGC 188 na
[Na/Fe] 0.10 ± 0.00 0.18 ± 0.04 0.15 ± 0.03 2
[Mg/Fe] −0.05 ± 0.03 0.06 ± 0.03 0.04 ± 0.04 4
[Al/Fe] 0.02 ± 0.05 0.11 ± 0.06 0.14 ± 0.07 2
[Si/Fe] 0.09 ± 0.04 0.14 ± 0.04 0.14 ± 0.04 14
[Ca/Fe] −0.11 ± 0.06 −0.01 ± 0.05 −0.09 ± 0.08 7
[Ti/Fe] −0.24 ± 0.05 −0.11 ± 0.03 −0.12 ± 0.04 19
[Cr/Fe] −0.08 ± 0.04 −0.02 ± 0.04 −0.03 ± 0.05 18
[Ni/Fe] 0.00 ± 0.03 0.09 ± 0.03 0.12 ± 0.03 32
[Zn/Fe] −0.17 ± 0.04 −0.07 ± 0.14 −0.11 ± 0.19 2
[Y/Fe] 0.03 ± 0.04 0.07 ± 0.05 −0.02 ± 0.06 3

Notes. (a) Number of absorption lines used in the determination.

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