Table 5
P-values for the different coefficients used in Eq. (5) for the correction from stellar activity in Alpha Centauri B data.
| Parameter | N mean RV | SN mean RV | SN median RV |
|---|---|---|---|
| β0 | 0.49 | 0.90 | 0.027 |
| β1 | 2.22e − 16 | 2.22e − 16 | 2.22e − 16 |
| β2 | 0.33 | 2.22e − 16 | 1.23e − 11 |
| β3 | 2.22e − 16 | 2.22e − 16 | 2.22e − 16 |
| β4 | 2.22e − 16 | 2.22e − 16 | 2.22e − 16 |
| R2 | 0.57 | 0.78 | 0.66 |
Notes. All the variables corresponding to the Normal or SN parameters are statistically significant, except for the asymmetry of the CCF when using the BIS SPAN with N mean RV. The estimated R2 show that the proposed linear combination explains the most variability in RVs due to the stellar activity when the RVs are estimated with the SN mean RV.
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