Table 1.
Mean abundances in NGC 6388 for the present and previous samples.
| Element | Stars | Avg. | rms | Ref. | Stars | Avg. | rms | Ref. | Stars | Avg. | rms | Ref. | Sun | Ref. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| [Fe/H]I | 12 | −0.509 | 0.039 | (1) | 150 | −0.488 | 0.040 | (2) | 35 | −0.480 | 0.045 | (3) | 7.54 | 1 |
| [Fe/H]II | 12 | −0.491 | 0.039 | (1) | 149 | −0.478 | 0.053 | (2) | 35 | −0.415 | 0.081 | (3) | 7.49 | 1 |
| [O/Fe]I | 12 | −0.210 | 0.187 | (1) | 148 | −0.040 | 0.227 | (2) | 35 | −0.201 | 0.190 | (3) | 8.79 | 1 |
| [Na/Fe]I | 12 | +0.544 | 0.334 | (1) | 150 | +0.342 | 0.283 | (2) | 35 | +0.514 | 0.230 | (3) | 6.21 | 1 |
| [Mg/Fe]I | 12 | +0.206 | 0.043 | (1) | 149 | +0.221 | 0.052 | (2) | 35 | +0.212 | 0.049 | (3) | 7.43 | 1 |
| [Al/Fe]I | 12 | +0.385 | 0.391 | (1) | 125 | +0.464 | 0.303 | (2) | 35 | +0.423 | 0.350 | (3) | 6.23 | 3 |
| [Si/Fe]I | 11 | +0.342 | 0.029 | (1) | 150 | +0.309 | 0.061 | (2) | 34 | +0.350 | 0.063 | (3) | 7.53 | 1 |
| [Ca/Fe] I | 12 | +0.082 | 0.047 | (1) | 150 | +0.069 | 0.046 | (2) | 35 | +0.062 | 0.049 | (3) | 6.27 | 1 |
| [Sc/Fe]II | 12 | −0.016 | 0.059 | (1) | 150 | −0.018 | 0.067 | (2) | 35 | −0.027 | 0.084 | (3) | 3.13 | 1 |
| [Ti/Fe]I | 12 | +0.292 | 0.050 | (1) | 150 | +0.270 | 0.098 | (2) | 35 | +0.295 | 0.086 | (3) | 5.00 | 1 |
| [Ti/Fe]II | 12 | +0.282 | 0.039 | (1) | 35 | +0.244 | 0.086 | (3) | 5.07 | 1 | ||||
| [V/Fe]I | 12 | +0.228 | 0.103 | (1) | 35 | +0.259 | 0.143 | (3) | 3.97 | 1 | ||||
| [Cr/Fe]I | 12 | −0.138 | 0.039 | (1) | 35 | −0.104 | 0.081 | (3) | 5.67 | 1 | ||||
| [Mn/Fe]I | 12 | −0.220 | 0.061 | (1) | 35 | −0.218 | 0.052 | (3) | 5.34 | 1 | ||||
| [Co/Fe]I | 12 | +0.043 | 0.069 | (1) | 35 | +0.041 | 0.078 | (3) | 4.92 | 2 | ||||
| [Ni/Fe]I | 12 | +0.023 | 0.022 | (1) | 150 | +0.034 | 0.030 | (2) | 35 | +0.032 | 0.029 | (3) | 6.28 | 1 |
| [Zn/Fe]I | 9 | +0.128 | 0.125 | (1) | 31 | +0.102 | 0.239 | (3) | 4.59 | 1 | ||||
| [Y/Fe]I | 11 | −0.323 | 0.183 | (1) | 32 | −0.259 | 0.253 | (3) | 2.24 | 2 | ||||
| [Zr/Fe]I | 10 | −0.101 | 0.096 | (1) | 138 | −0.226 | 0.156 | (2) | 30 | −0.113 | 0.156 | (3) | 2.60 | 2 |
| [Zr/Fe]II | 10 | −0.186 | 0.203 | (1) | 29 | −0.106 | 0.181 | (3) | ||||||
| [Ba/Fe]II | 11 | −0.084 | 0.154 | (1) | 149 | −0.016 | 0.135 | (2) | 33 | −0.115 | 0.140 | (3) | 2.22 | 3 |
| [La/Fe]II | 12 | +0.155 | 0.065 | (1) | 35 | +0.191 | 0.141 | (3) | 1.22 | 2 | ||||
| [Ce/Fe]II | 11 | −0.295 | 0.059 | (1) | 34 | −0.299 | 0.142 | (3) | 1.63 | 3 | ||||
| [Nd/Fe]II | 11 | +0.032 | 0.082 | (1) | 34 | +0.032 | 0.091 | (3) | 1.50 | 2 | ||||
| [Eu/Fe]II | 11 | +0.253 | 0.037 | (1) | 32 | +0.248 | 0.063 | (3) | 0.55 | 3 |
Notes. (1) This work; new UVES spectra. (2) This work; GIRAFFE spectra. (3) Total sample with UVES spectra (this work + Carretta et al. 2007a,b + Carretta & Bragaglia 2018). References for solar: 1 = Gratton et al. (2003); 2 = Anders & Grevesse (1989); 3 = R. Gratton (priv. comm.). The average [Ba/Fe] abundance from GIRAFFE is computed by excluding the star l63p075 (see text).
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