Table 2.
Modulation periods derived by various methods.
| OC# | P2 (d) | σfit (min) | Template |
|---|---|---|---|
| 1 | 5427 ± 266 | 1.684 | – |
| 2 | 5045 ± 492 | 3.678 | – |
| 3 | 5206 ± 243 | 1.852 | – |
| 4 | 4965 ± 185 | 1.633 | AAVSO-V-4 |
| 4925 ± 142 | 1.380 | Kepler-4 | |
| 4985 ± 169 | 1.537 | AAVSO-V-1 | |
| 5 | 4683 ± 276 | 3.261 | AAVSO-V-4 |
| 5990 ± 747 | 2.689 | Kepler-4 | |
| 4965 ± 320 | 3.019 | AAVSO-V-1 |
Notes. The type of fit employed on the light curves is given in the first column and is defined in Sect. 2 (the first three refer to Fourier-based O–C values, the fourth and fifth to template-based values with the template indicated in the last column). Equation (2) was fitted by least squares to derive σfit for the best modulation period. The 1σ errors of the periods were calculated with the aid of a simple Monte Carlo method. The best solution is highlighted.
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