Table 6
Distances, [Fe/H], [S/Fe], and [Zn/Fe], for stars belonging to clusters.
| Cluster | Type | R ⊙ | R GC | [Fe/H] | [S/Fe] | [S/Fe]NLTE | [Zn/Fe] | [Zn/Fe]NLTE | Stars | Comment | |
|
|
|||||||||||
| kpc | kpc | N | Type | ||||||||
|
|
|||||||||||
| NGC 104/47 Tuc | GC | 4.5 | 7.3 | − 0.81 ± 0.04 | + 0.51 ± 0.14 | + 0.46 ± 0.14 | + 0.18 ± 0.11 | + 0.17 ± 0.10 | 19 | G | |
| NGC 1851 | GC | 12.1 | 16.6 | − 1.13 ± 0.01 | + 0.52 ± 0.09 | + 0.47 ± 0.09 | + 0.23 ± 0.01 | + 0.20 ± 0.01 | 2 | G | |
| NGC 2808 | GC | 9.6 | 11.1 | − 1.15 ± 0.06 | + 0.68 ± 0.11 | + 0.62 ± 0.11 | + 0.06 ± 0.01 | + 0.05 ± 0.01 | 2 | G | high S |
| M 15 | GC | 10.4 | 10.4 | − 2.65 | + 1.75 | + 1.68 | + 0.16 | + 0.17 | 1 | ||
| NGC 362 | GC | 8.7 | 9.40 | − 1.02 | + 0.55 | + 0.50 | − 0.01 | − 0.01 | 1 | G | high S |
| M 67 | OC | 0.775 | 8.49 | − 0.12 ± 0.04 | + 0.02 ± 0.06 | − 0.01 ± 0.06 | − 0.03 ± 0.08 | − 0.06 ± 0.08 | 18 | D,G | G with high S |
| NGC 2243 | OC | 3.45 | 10.1 | − 0.55 ± 0.04 | + 0.15 ± 0.07 | + 0.11 ± 0.07 | + 0.04 ± 0.05 | − 0.00 ± 0.05 | 9 | G | |
| Berkeley 25 | OC | 9.1 | 15.6 | − 0.45 | + 0.12 | + 0.08 | + 0.12 | + 0.06 | 1 | G | |
| NGC 2451A | OC | 0.2 | 8.0 | − 0.05 ± 0.06 | + 0.03 ± 0.11 | + 0.01 ± 0.12 | − 0.02 ± 0.08 | − 0.04 ± 0.08 | 2 | D | |
| NGC 2516 | OC | 0.35 | 7.93 | − 0.09 ± 0.04 | + 0.21 ± 0.08 | + 0.20 ± 0.08 | + 0.48 ± 0.10 | + 0.46 ± 0.10 | 2 | D | high S |
| NGC 2547 | OC | 0.36 | 7.98 | − 0.12 ± 0.03 | + 0.05 ± 0.09 | + 0.02 ± 0.09 | + 0.04 ± 0.04 | + 0.02 ± 0.04 | 2 | D | |
| IC 2391 | OC | 0.15 | 7.94 | − 0.16 | + 0.13 | + 0.11 | + 0.12 | + 0.10 | 1 | D | |
| Trumpler 20 | OC | 3.0 | 6.9 | + 0.01 ± 0.05 | + 0.10 ± 0.09 | + 0.07 ± 0.09 | − 0.27 ± 0.12 | − 0.34 ± 0.12 | 39 | G | |
| NGC 4815 | OC | 2.5 | 6.9 | − 0.11 ± 0.02 | + 0.16 ± 0.05 | + 0.12 ± 0.05 | − 0.23 ± 0.16 | − 0.31 ± 0.16 | 5 | G | high S |
| Pismis 18 | OC | 2.2 | 6.8 | − 0.01 ± 0.03 | + 0.12 ± 0.06 | + 0.09 ± 0.06 | − 0.28 ± 0.11 | − 0.35 ± 0.11 | 6 | G | |
| NGC 6005 | OC | 2.7 | 5.9 | + 0.06 ± 0.02 | + 0.14 ± 0.09 | + 0.12 ± 0.09 | − 0.31 ± 0.09 | − 0.37 ± 0.09 | 12 | G | |
| Trumpler 23 | OC | 2.0 | 6.3 | + 0.05 ± 0.04 | + 0.27 ± 0.07 | + 0.24 ± 0.07 | − 0.21 ± 0.19 | − 0.27 ± 0.18 | 10 | G | high S |
| NGC 6633 | OC | 0.38 | 7.64 | − 0.15 ± 0.06 | + 0.04 ± 0.04 | + 0.01 ± 0.03 | − 0.09 ± 0.05 | − 0.12 ± 0.08 | 8 | D,G | |
| NGC 6705 | OC | 1.9 | 6.3 | + 0.02 ± 0.06 | + 0.20 ± 0.10 | + 0.16 ± 0.10 | − 0.28 ± 0.18 | − 0.37 ± 0.17 | 19 | G | trend S with Teff |
| Berkeley 81 | OC | 3.0 | 5.7 | + 0.10 ± 0.06 | + 0.19 ± 0.11 | + 0.16 ± 0.11 | − 0.36 ± 0.16 | − 0.42 ± 0.15 | 6 | G | trend S with Teff |
| NGC 6802 | OC | 1.8 | 7.1 | − 0.00 ± 0.02 | + 0.09 ± 0.07 | + 0.05 ± 0.07 | − 0.15 ± 0.13 | − 0.22 ± 0.13 | 9 | G | |
Notes. Globular cluster distances from Harris (1996; 2010 edition). For open clusters: distance for NGC 2243, Bragaglia & Tosi (2006); Be 25, Carraro et al. (2007); M 67, Montgomery et al. (1993); all the others from Spina et al. (2017, and reference therein). Galactocentric radii have been computed assuming a distance of the Sun to the Galactic centre of 7.94 kpc (Eisenhauer et al. 2003). [Fe/H] is derived averaging among the selected stars in each cluster. The solar abundances applied here are those of the third column in Table 4. Average [Fe/H] values for the open clusters are about 0.1 dex below those reported by Jacobson et al. (2016) and Spina et al. (2017) due to the use of different solar reference values and to the inclusion of only the subset of stars with measured sulphur.
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