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Table 2.
Spectroscopic mode, wavelength coverage, and throughput and spectral resolution of the five spectrographs, as used in this work.
| Instrument name | Spectroscopic mode | Wavelength coverage (Å) | Throughput p | Spectral resolution λ / Δλ |
|---|---|---|---|---|
| Keck/ESI | Echellette | 3900–10 000 | p ≥ 28% | ∼10 000 |
| Lick/KAST | Blue arm | 3500–5600 | 5%< p < 30% | ∼1000 |
| Lick/KAST | Red arm | 5400–8000 | 30%< p < 40% | ∼1500 |
| SALT/RSS | Long slit | 4500–7500 | p > 20% | ∼1000 |
| VLT/FORS | Low resolution, GRISM 600RI+19 | 5000–8500 | 20%< p < 30% | ∼800 |
| VLT/FORS | Low resolution, GRISM 1200B+97 | 3600–5100 | 15%< p < 20% | ∼1200 |
| GTC/OSIRIS | Long slit, GRISM R1000B | 3650–7500 | 15%< p < 20% | ∼1000 |
| GTC/OSIRIS | Long slit, GRISM R1000R | 5100–10 000 | 15%< p < 20% | ∼1000 |
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