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Table 4.
Correlations between the different activity indexes and the CCF indexes.
| Heliocentric RV | FWHM | Contrast | BIS | |||
|---|---|---|---|---|---|---|
| Ca II H & K | ||||||
| ρ | 0.452 ± 0.029 | 0.048 ± 0.035 | −0.835 ± 0.012 | 0.642 ± 0.022 | ||
| z-score | 5.890 ± 0.440 | 0.585 ± 0.424 | 14.528 ± 0.465 | 9.198 ± 0.452 | ||
| Hα | ||||||
| ρ | −0.035 ± 0.035 | 0.132 ± 0.034 | 0.286 ± 0.033 | −0.173 ± 0.034 | ||
| z-score | 0.425 ± 0.419 | 1.610 ± 0.417 | 3.557 ± 0.431 | 2.110 ± 0.423 | ||
| Hβ | ||||||
| ρ | −0.248 ± 0.034 | 0.129 ± 0.035 | 0.592 ± 0.023 | −0.481 ± 0.027 | ||
| z-score | 3.059 ± 0.437 | 1.562 ± 0.425 | 8.227 ± 0.421 | 6.330 ± 0.431 | ||
| Hγ | ||||||
| ρ | −0.130 ± 0.035 | 0.101 ± 0.035 | 0.380 ± 0.030 | −0.280 ± 0.032 | ||
| z-score | 1.577 ± 0.428 | 1.224 ± 0.426 | 4.838 ± 0.421 | 3.478 ± 0.421 | ||
| Hδ | ||||||
| ρ | 0.036 ± 0.035 | 0.086 ± 0.035 | 0.035 ± 0.036 | −0.063 ± 0.035 | ||
| z-score | 0.436 ± 0.428 | 1.047 ± 0.423 | 0.424 ± 0.429 | 0.763 ± 0.427 | ||
| Hϵ | ||||||
| ρ | 0.328 ± 0.032 | −0.018 ± 0.035 | −0.651 ± 0.022 | 0.497 ± 0.028 | ||
| z-score | 4.111 ± 0.436 | 0.217 ± 0.423 | 9.385 ± 0.470 | 6.585 ± 0.442 | ||
| He I D3 | ||||||
| ρ | −0.106 ± 0.035 | 0.066 ± 0.035 | 0.320 ± 0.032 | −0.142 ± 0.034 | ||
| z-score | 1.286 ± 0.425 | 0.802 ± 0.421 | 4.011 ± 0.426 | 1.721 ± 0.413 | ||
| Na I D1 D2 | ||||||
| ρ | 0.185 ± 0.035 | 0.019 ± 0.035 | −0.213 ± 0.033 | 0.291 ± 0.032 | ||
| z-score | 2.262 ± 0.437 | 0.229 ± 0.421 | 2.613 ± 0.416 | 3.617 ± 0.421 | ||
Notes. The correlations with a z-score larger than 3.0 are shown in bold face.
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