Table 4
Best-fit coefficients for Eq. (1) with standard error.
| Spectral type | a | b |
|---|---|---|
All stars from valid sample  |
||
| All | 1.51 ± 0.08 | 1.90 ± 0.35 |
| F5-F9 | 1.37 ± 0.06 | 1.45 ± 0.20 |
| G0-G4 | 1.90 ± 0.14 | 3.60 ± 0.54 |
| G5-G9 | 1.98 ± 0.08 | 3.86 ± 0.31 |
| K0-K4 | 2.11 ± 0.13 | 4.29 ± 0.46 |
| K5-K9 | 1.18 ± 0.05 | 0.24 ± 0.20 |
| Valid sample with most inactive stars excluded | ||
| F5-F9 | 1.72 ± 0.06 | 2.98 ± 0.24 |
| G0-G4 | 2.25 ± 0.20 | 5.08 ± 0.82 |
| G5-G9 | 2.06 ± 0.09 | 4.23 ± 0.33 |
| K0-K4 | 2.65 ± 0.13 | 6.55 ± 0.50 |
| K5-K9 | 1.45 ± 0.05 | 1.43 ± 0.21 |
All stars from valid sample  |
||
| All | 2.31 ± 0.11 | 5.71 ± 0.46 |
| F5-F9 | 2.29 ± 0.12 | 5.71 ± 0.49 |
| G0-G4 | 2.85 ± 0.22 | 8.04 ± 0.92 |
| G5-G9 | 2.84 ± 0.14 | 8.00 ± 0.54 |
| K0-K4 | 2.77 ± 0.17 | 7.75 ± 0.70 |
| K5-K9 | 2.11 ± 0.09 | 4.86 ± 0.34 |
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