Open Access
Table 5
Tracers whose feature importance values are higher than the fiducial value of median plus one standard deviation are indicated, meaning that marked tracers are significantly important features for determining each stellar parameter.
| M-type | K-type | G-type | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Tracers | Used in observations for | Teff | log(ɡ) | AV | Teff | log(ɡ) | AV | Teff | log(ɡ) | AV |
| Na I doublet 5890, 5896 Å | Teff, log(ɡ) | – | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| TiO 6080–6390, 7053–7270 Å | Teff (M- and late K-type) | – | – | – | – | – | – | – | – | – |
| Ca I 6122, 6162, 6439 Å | log(ɡ) | – | – | – | – | – | – | – | – | – |
| Ba II, Fe I, and Ca I blend 6497 Å | Teff, log(ɡ) | – | – | – | ✓ | – | ✓ | ✓ | – | ✓ |
| Ha 6563 Å | Teff (early type) | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| CaH 6750–7050 Å | Teff (M-type), log(ɡ) | – | – | – | – | – | – | – | – | – |
| VO 7550–7570, 7920–8000 Å | Teff (M-type) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | – | ✓ |
| K I doublet 7665, 7699 Å | Teff, log(ɡ) | ✓ | ✓ | ✓ | – | – | – | – | – | – |
| R1 8015–8130 Å | Teff (M-type) | ✓ | ✓ | ✓ | – | – | – | ✓ | ✓ | – |
| Na I doublet 8183, 8195 Å | Teff (M-type), log(ɡ) | ✓ | ✓ | ✓ | ✓ | ✓ | – | – | ✓ | ✓ |
| hydrogen Paschen series | AV | – | – | – | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Ca II IR triplet 8498, 8542, 8662 Å | Teff (early type) | ✓ | ✓ | – | ✓ | ✓ | – | ✓ | ✓ | ✓ |
| Mg I 8807 Å | Teff | – | – | – | – | ✓ | – | – | ✓ | – |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.