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Table 1
Properties of the different spectrographs used in this work.
| Spectrograph | Spectral range (Å) | Resolving power | N stars |
|
|
|||
| FOCES | 3470−10 700 | 57 000 | 58 |
| SARG | 5500−10 100 | 57 000 | 10 |
| FIES | 3640−7360 | 67 000 | 20 |
| HERMES | 3800−9000 | 85 000 | 37 |
| FEROS | 3500−9200 | 42 000 | 56 |
| McDonald | 3400−10 900 | 60 000 | 48 |
| HARPS | 3780−6910 | 115 000 | 22 |
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