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Table 2.
Number of times that each element allows to distinguish some pair clusters in Fig. 3 (Cols. 2-5) and median standard deviation in the measure of abundances for all the stars in the sample (Col. 6).
| Element | Nbest | σ[X/M] | |||
|---|---|---|---|---|---|
| Glob-glob (i) | Glob-open (ii) | Open-open (iii) | All comb. | ||
| C | 6 | 20 | 43 | 69 | 0.18 |
| N | 2 | 27 | 32 | 61 | 0.20 |
| Na | 7 | 23 | 23 | 53 | 0.84 |
| Al | 1 | 10 | 11 | 22 | 0.62 |
| Fe | 0 | 11 | 6 | 17 | 0.65 (iv) |
| O | 0 | 7 | 8 | 15 | 0.12 |
| K | 4 | 7 | 4 | 15 | 0.60 |
| Mg | 3 | 2 | 4 | 9 | 0.10 |
| Ni | 2 | 4 | 0 | 6 | 0.61 |
| Si | 2 | 1 | 2 | 5 | 0.12 |
| P | 1 | 0 | 2 | 3 | 0.72 |
| S | 0 | 0 | 1 | 1 | 0.18 |
| Ca | 0 | 0 | 0 | 0 | 0.11 |
Notes.
(i)Pairs of globular clusters.
(ii)Pairs with one globular and one open cluster.
(iii)Pairs of open clusters.
(iv)σ[Fe/H].
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