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Table 2

Average [Fe/H] from this work compared with the 13 globular clusters in common with C09.

Cluster Other [Fe/H] [Fe/H] Ref.
names (average) (lit.)

NGC 104 47 Tuc –0.71 ± 0.04 –0.77 ± 0.05 C09
NGC 2808 –1.06 ± 0.05 –1.15 ± 0.07 C09
NGC 3201 –1.51 ± 0.03 –1.51 ± 0.06 C09
NGC 4590 M 68 –2.20 ± 0.05 –2.26 ± 0.05 C09
NGC 5904 M 5 –1.25 ± 0.05 –1.34 ± 0.05 C09
NGC 6121 M 4 –1.01 ± 0.05 –1.17 ± 0.05 C09
NGC 6171 M 107 –0.95 ± 0.09 –1.03 ± 0.04 C09
NGC 6254 M 10 –1.56 ± 0.04 –1.57 ± 0.06 C09
NGC 6397 –2.07 ± 0.03 –1.99 ± 0.04 C09
NGC 6441 –0.41 ± 0.07 –0.43 ± 0.06 C09
NGC 6752 –1.57 ± 0.07 –1.55 ± 0.05 C09
NGC 6838 M 71 –0.63 ± 0.06 –0.83 ± 0.06 C09
NGC 7078 M 15 –2.23 ± 0.02 –2.32 ± 0.06 C09
NGC 6528 –0.13 ± 0.07 –0.02 ± 0.09 C01,Z04
NGC 6553 –0.13 ± 0.01 –0.19 ± 0.02 C99, M03, AB06

Notes. For the two metal-rich clusters we adopted the mean metallicities from Carretta et al. (2001, C01) and Zoccali et al. (2004, Z04) for NGC 6528, and from Cohen et al. (1999, C99), Meléndez et al. (2003, M03), and Alves-Brito et al. (2006, AB06) for NGC 6553.

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