Open Access
Table 4.
Comparison of β values.
| Data | Sample | β | References | |
|---|---|---|---|---|
| Active branch | 0.48 | Brandenburg et al. (1998) | ||
| Inactive branch | 0.46 | |||
| Late-type stars | S branch | −0.43 | Saar & Brandenburg (1999) | |
| observations | 45 FGK stars | < 0 | Boro Saikia et al. (2018) | |
| 15 M dwarfs | −1.02 ± 0.06 | Irving et al. (2023) | ||
| 40 FGK stars | −0.81 ± 0.17 | |||
| Slow rotators | −0.73 | Viviani et al. (2018) | ||
| Fast rotators | −0.50 | |||
| Global fit | −0.99 ± 0.05 | Warnecke (2018) | ||
| Solar-like stars | Global fit | −1.58 ± 0.11 | Strugarek et al. (2018) | |
| simulations | Slow rotators | −0.47 ± 0.15 | Guerrero et al. (2019) | |
| Fast rotators | 1.17 ± 0.05 | |||
| Surface cycles | −0.03 ± 0.12 | Käpylä (2022) | ||
| Deep cycles | −0.11 ± 0.17 | |||
| M dwarf simulations | Global fit | −1.30 ± 0.26 | Ortiz-Rodríguez et al. (2023) | |
| MHD group | −1.22 ± 0.05 | |||
| A-type star simulations | MHD* group | −1.13 ± 0.11 | Present work | |
| zMHD group | −0.83 ± 0.16 | |||
Notes. Data correspond to chromospheric observations and numerical simulations.
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