The Gaia-ESO Survey: a new approach to chemically characterising young open clusters - I. Stellar parameters, and iron-peak, α-, and proton-capture elements

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Volume 634 (February 2020)

A&A, 634 (2020) A34

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Table 5

Mean abundances and abundance ratios of each cluster.

	IC 2391	IC 2602	IC 4665	NGC 2264 ^(*)	NGC 2516	NGC 2547
[Fe/H]	0.04 ± 0.01	0.04 ± 0.01	0.12 ± 0.02	0.11 ± 0.02	0.08 ± 0.01	0.10 ± 0.01
[Ti/H]	0.02 ± 0.01	0.03 ± 0.01	0.11 ± 0.03	0.19 ± 0.09	0.09 ± 0.01	0.10 ± 0.01
[Na/Fe]	−0.03 ± 0.02	0.02 ± 0.01	0.04 ± 0.03	0.06 ± 0.04	−0.03 ± 0.01	−0.005 ± 0.004
[Mg/Fe]	0.02 ± 0.02	−0.03 ± 0.01	–	−0.02 ± 0.04	−0.07 ± 0.02	0.01 ± 0.03
[Al/Fe]	0.03 ± 0.02	−0.01 ± 0.03	–	–	0.00 ± 0.04	0.04 ± 0.04
[Si/Fe]	0.00 ± 0.01	0.01 ± 0.03	0.03 ± 0.02	−0.02 ± 0.05	−0.02 ± 0.01	−0.01 ± 0.02
[Ca/Fe]	0.075 ± 0.004	0.08 ± 0.02	0.07 ± 0.02	0.02 ± 0.04	0.04 ± 0.01	0.07 ± 0.01
[Ti/Fe]	0.01 ± 0.01	0.01 ± 0.02	0.00 ± 0.04	0.03 ± 0.06	0.008 ± 0.004	0.01 ± 0.02
[Ti/Fe]_II	−0.05 ± 0.01	−0.02 ± 0.01	−0.02 ± 0.04	0.04 ± 0.05	−0.01 ± 0.01	−0.03 ± 0.01
[Cr/Fe]	0.01 ± 0.03	0.05 ± 0.01	0.08 ± 0.02	0.02 ± 0.06	0.02 ± 0.01	0.07 ± 0.04
[Ni/Fe]	−0.04 ± 0.02	0.023 ± 0.003	0.06 ± 0.01	0.00 ± 0.02	0.03 ± 0.01	0.03 ± 0.02

Notes. ^(*) For this cluster we analysed only one star, therefore the uncertainty is the quadratic sum of σ₁ and σ₂.

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