Open Access
Table 2
Absorption lines included in the feature selection step, their central wavelengths, and feature ranges in ascending order, with a consistent wavelength spacing of about 0.83 Å.
| Line | Central wavelength (Å) | Wavelength range (Å) |
|---|---|---|
| Ca II K | 3934 | 3926.45–3940.94 |
| Can II H | 3968 | 3960.96–3975.58 |
| Fe I | 4046 | 4038.31–4053.22 |
| H δ | 4102 | 4094.49–4109.60 |
| Ca I | 4227 | 4218.91–4234.48 |
| G-band CH | 4300 | 4292.40–4308.24 |
| He II | 4686 | 4677.35–4694.62 |
| TiO band | 4955 | 4945.38–4963.64 |
| Fe II | 5018 | 5008.41–5026.90 |
| Fe I | 5269 | 5258.96–5278.37 |
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