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Table 1
Basic information about the spectra used.
| Spectrograph | Abbreviation | Spectral range (Å) | Resolution | S/N range | ||||
|
|
||||||||
| FEROS | F plus T | 3600−9100 | 48 000 | 63−311 | ||||
| HARPS | H | 3800−6912 | 115 000 | 84−106 | ||||
| BESO | B | 3800−8000 | 48 000 | 26−196 | ||||
| CTIO | C | 4500−8900 | 28 000 | 83−177 | ||||
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