Table 6
Metallicities for the GCs of R97 in the scale of C09c.
| GC | [Fe/H] | ⟨ W′ ⟩ | [Fe/H]1 | Δ | Δ/σ | [Fe/H]2 | Δ | Δ/σ | [Fe/H]3 | Δ | Δ/σ | ||||||
| (1) | (2) | (3) | (Ia) | (Ib) | (Ic) | (IIa) | (IIb) | (IIc) | (IIIa) | (IIIb) | (IIIc) | ||||||
|
|
|||||||||||||||||
| NGC 2808 | –1.18 | 3.80 | –1.27 | +0.09 | +0.5 | –1.32 | +0.14 | +1.5 | –1.32 | +0.14 | +1.4 | ||||||
| NGC 3201 | –1.51 | 3.59 | –1.39 | –0.12 | –0.7 | –1.47 | –0.04 | –0.5 | –1.47 | –0.04 | –0.4 | ||||||
| NGC 4372 | –2.19 | 2.07 | –2.25 | +0.06 | +0.4 | –2.21 | +0.02 | +0.2 | –2.21 | +0.02 | +0.2 | ||||||
| NGC 4590 | –2.27 | 1.98 | –2.30 | +0.03 | +0.2 | –2.23 | –0.04 | –0.4 | –2.24 | –0.03 | –0.3 | ||||||
| NGC 6121 | –1.18 | 3.98 | –1.17 | –0.01 | –0.1 | –1.19 | +0.01 | +0.1 | –1.20 | +0.02 | +0.2 | ||||||
| NGC 6397 | –1.99 | 2.29 | –2.13 | +0.14 | +0.8 | –2.13 | +0.14 | +1.5 | –2.13 | +0.14 | +1.3 | ||||||
| NGC 6522 | –1.45 | 3.72 | –1.31 | –0.14 | –0.8 | –1.38 | –0.07 | –0.8 | –1.38 | –0.07 | –0.7 | ||||||
| NGC 6528 | –0.17 | 5.35 | –0.39 | +0.22 | +1.4 | +0.04 | –0.21 | –2.2 | +0.07 | –0.24 | –2.3 | ||||||
| NGC 6541 | –1.82 | 2.98 | –1.73 | –0.09 | –0.5 | –1.83 | +0.01 | +0.1 | –1.82 | –0.00 | –0.0 | ||||||
| NGC 6544 | –1.47 | 3.54 | –1.42 | –0.05 | –0.3 | –1.50 | +0.03 | +0.3 | –1.50 | +0.03 | +0.3 | ||||||
| NGC 6553 | –0.16 | 5.06 | –0.56 | +0.40 | +2.4 | –0.25 | +0.09 | +1.0 | –0.24 | +0.08 | +0.8 | ||||||
| NGC 6624 | –0.69 | 4.56 | –0.84 | +0.15 | +0.9 | –0.72 | +0.03 | +0.3 | –0.72 | +0.03 | +0.3 | ||||||
| NGC 6626* | –1.28 | 3.81 | –1.26 | –0.02 | –0.1 | –1.31 | +0.03 | +0.3 | –1.32 | +0.04 | +0.4 | ||||||
| NGC 6637 | –0.59 | 4.64 | –0.80 | +0.21 | +1.3 | –0.66 | +0.07 | +0.7 | –0.66 | +0.07 | +0.6 | ||||||
| NGC 6638 | –0.99 | 4.29 | –0.99 | +0.00 | +0.0 | –0.95 | –0.04 | –0.4 | –0.95 | –0.04 | –0.3 | ||||||
| NGC 6809 | –1.93 | 2.93 | –1.76 | –0.17 | –1.0 | –1.85 | –0.08 | –0.8 | –1.84 | –0.09 | –0.8 | ||||||
| NGC 7099 | –2.33 | 1.86 | –2.37 | +0.04 | +0.2 | –2.27 | –0.06 | –0.6 | –2.28 | –0.05 | –0.5 | ||||||
Notes. Column (1) lists the cluster ID (the GCs marked with * were not used to calculate the calibration). Column (2) is the metallicity according to the scale. Column (3) is the calculated rEW. Column (Xa) is the metallicity based on the calibration using a polynomial of degree X. Column (Xb) is the difference between the calculated and the scale metallicity. Column (Xc) is the former difference in rms.
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