Table A.3
Period analysis of λ And for different activity indicators.
| Activity Indicator | PLS (days) | PPDM (days) |
|---|---|---|
| Ca II IRT-1 | 54.3 ± 0.1 | 54.4 ± 0.3 |
| Ca II IRT-2 | 54.3 ± 0.1 | 54.5 ± 0.2 |
| Ca II IRT-3 | 54.2 ± 0.1 | 54.4 ± 0.2 |
| Ca H | 54.2 ± 0.1 | 54.3 ± 0.3 |
| Ca K | 54.2 ± 0.1 | 54.3 ± 0.3 |
| Hα | 53.8 ± 0.4 | 54.2 ± 0.5 |
| Hβ | 52.7 ± 1.1 | 54.2 ± 1.4 |
| ∆T | 54.3 ± 0.1 | 54.3 ± 0.2 |
| RV residuals | 54.4 ± 0.3 | 54.4 ± 0.4 |
Notes. Rotational period is determined by using different activity indicators with two methods; Lomb-Scargle (LS) periodogram and phase dispersion minimization (PDM). They all agree ~54 days. While Ca II IRT and Ca II H&K lines demonstrate the least deviations from the period we determined by using the RV residuals, Hα and Hβ lines show higher deviations with larger error bars.
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