Table 5
Three seven-spot solutions for KIC 7985370.
| Parametera | Case Ab | Case Ab | Case Bb | ||||||
|
|
|||||||||
| inclination | i | 75°.0 | fixed | 41°.4 |
|
32°.6 |
|
||
| 1st | latitude | β1 | 34°.0 |
|
29°.4 |
|
22°.6 |
|
|
| 2nd | latitude | β 2 | −10°.0 |
|
−6°.9 |
|
3°.3c |
|
|
| 3rd | latitude | β3 | 32°.2 |
|
29°.9 |
|
27°.7 |
|
|
| 4th | latitude | β 4 | 86°.8 |
|
87°.5 |
|
87°.8 |
|
|
| 5th | latitude | β 5 | 53°.8 |
|
53°.6 |
|
51°.1 |
|
|
| 6th | latitude | β 6 | 35°.8 |
|
35°.8 |
|
33°.0 |
|
|
| 7th | latitude | β 7 | 29°.6 |
|
19°.9 |
|
10°.0 |
|
|
| 1st | period | P 1 | 2.8581 |
|
2.8563 |
|
2.8572 |
|
|
| 2nd | period | P 2 | 2.8350 |
|
2.8428 |
|
2.8475 |
|
|
| 3rd | period | P 3 | 2.8541 |
|
2.8572 |
|
2.8644 |
|
|
| 4th | period | P 4 | 3.0895 |
|
3.0898 |
|
3.0888 |
|
|
| 5th | period | P 5 | 2.9382 |
|
2.9421 |
|
2.9417 |
|
|
| 6th | period | P 6 | 2.8629 |
|
2.8700 |
|
2.8754 |
|
|
| 7th | period | P 7 | 2.8490 |
|
2.8460 |
|
2.8487 |
|
|
| spot intensity | κ | 0.437 |
|
0.396 |
|
0.406 |
|
||
| equ. period | P eq | 2.8347 |
|
2.8427 |
|
2.8474 |
|
||
| deviation | C/B | 0.28 | 0.28 | 0.21 | |||||
| diff. rotation | dΩ | 0.1839 |
|
0.1774 |
|
0.1729 |
|
||
| residuals | ± 2.46 | ± 2.14 | ± 2.12 | ||||||
Notes. Listed are expectation values and 1-σ confidence limits.
Latitudes β are derived from the assumed law of differential rotation (Eq. (2)). Periods P are given in days, and the spot intensity κ in units of the intensity of the unspotted surface. The ratio C/B measures the deviation from a pure sin2-law of differential rotation. The differential rotation dΩ (rad d-1) is the equator-to-pole value of the shear. Residuals are in mmag.
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