Open Access
Table 1.
Characteristics of our sample.
| Sample | Number of stars |
|---|---|
| Initial (Gaulme et al. 2020) | 4465 |
| With S-index (Gehan et al. 2022) | 3130 |
| With SCa II H&K | 3105 |
| With SMg I | 3155 |
| With SHα | 3260 |
| With SFe I | 3260 |
| With SCa II IR | 3265 |
| With ΔmNUV | 842 |
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