Open Access
Table 2
General characteristics of the spectrographs used in this work.
| Instrument | R | CCD detector | Pixel size | Telescope | Approx. wave. range |
|---|---|---|---|---|---|
| FEROS | 48 000 | 2k × 4k | 15 µm | MPG 2.2 m | 3800–8600 |
| REOSC | 13 000 | 1k × 1k | 24 µm | CASLEO 2.15 m | 3800–6500 |
| GRACES | 67 000 | 2k × 4k | 13.5 µm | Gemini 8.2 m | 4050–9000 |
| HARPS | 115 000 | 4k × 4k | 15 µm | La Silla 3.6 m | 3800 - 6800 |
| HARPS-N | 115 000 | 4k × 4k | 15 µm | TNG 3.6 m | 3800–6800 |
| HIRES | 67 000 | 2k × 4k | 15 µm | Keck 10 m | 3750–9000 |
| SOPHIE | 75 000 | 4k × 2k | 15 µm | OHP 1.93 m | 3900–6800 |
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