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Table 3

Cluster metallicities and abundance ratios.


Cluster [Fe/H] [MgI/Fe] [SiI/Fe] [CaI/Fe] [TiI/Fe] [α/Fe] [α/Fe] provenance
NGC 2451A − 0.05± 0.02 − 0.08:: − 0.17:: 0.02:: − 0.17:: − 0.1 ± 0.07 this paper, 1 star
NGC 2451B − 0.01± 0.01 − 0.02:: − 0.08:: 0.01:: 0.05:: − 0.01 ± 0.07 this paper, 1 star
NGC 2516 − 0.08 ± 0.02 0.04 ± 0.06 − 0.05 ± 0.07 0.03 ± 0.05 0.10 ± 0.09 0.03 ± 0.08 Magrini et al. (2017)
NGC 2547 − 0.01 ± 0.01 0.00 ± 0.02 − 0.06 ± 0.06 0.07 ± 0.01 0.07 ± 0.03 0.02 ± 0.06 this paper, 2 stars
IC 2391 − 0.03 ± 0.02 − 0.10 ± 0.20 − 0.08 ± 0.02 0.06 ± 0.05 0.03 ± 0.04 − 0.02 ± 0.08 this paper 2 stars
IC 2602 − 0.02 ± 0.02 0.06 ± 0.08 − 0.08 ± 0.08 0.08 ± 0.11 0.0 ± 0.12 0.01 ± 0.09 this paper, 7 stars
IC 4665 0.0 ± 0.02 0.05 ± 0.09 − 0.10 ± 0.08 0.08 ± 0.09 0.01 ± 0.13 0.01 ± 0.11 this paper, 6 stars
NGC 6633 − 0.06 ± 0.02 − 0.01 ± 0.01 − 0.02 ± 0.04 0.07 ± 0.06 0.01 ± 0.07 0.01 ± 0.04 Magrini et al. (2017)

Notes. [Fe/H] values have been retrieved from Jacobson et al. (2016) and Spina et al. (2017) for all clusters, while α-element abundances have been taken from Magrini et al. (2017) or determined in this paper, as indicated. Abundance ratios derived from one star only are marked with “::”. Note that for the same clusters, [Fe/H] values were instead estimated using more stars (Spina et al. 2017).

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