Table 1
Fitted parameters and uncertainties from the MCMC analysis of the light curves of WASP-33b.
| Parameter | Night 1 | Night 2 | |||
| unit | Instrumental parameters | Polynomial | Instrumental parameters | Polynomial | |
|
|
|||||
| Fp/F ∗ | (%) | 0.140 ± 0.007 | 0.092 ± 0.017 | 0.245 ± 0.009 | 0.246 ± 0.018 |
|
|
|||||
| x | 0.06 ± 0.01 | – | –0.12 ± 0.02 | – | |
| airmass | –0.76 ± 0.03 | – | 0.34 ± 0.03 | – | |
| sky | 0.27 ± 0.03 | – | –0.53 ± 0.03 | – | |
| c 1 | – | 0.42 ± 0.01 | – | 0.10 ± 0.01 | |
| c 2 | – | –0.09 ± 0.02 | – | –0.01 ± 0.02 | |
| c 3 | – | 0.10 ± 0.01 | – | –0.13 ± 0.01 | |
|
|
|||||
| P 1 | (minutes) | 63.95 ± 0.39 | 62.00 ± 0.51 | 52.65 ± 0.39 | 52.28 ± 0.51 |
| P 2 | (minutes) | 43.22 (fixed) | 43.34 (fixed) | ||
| P 3 | (minutes) | – | 65.29 (fixed) | ||
| P 4 | (minutes) | – | 83.90 (fixed) | ||
| A 1 | (%) | 0.095 ± 0.004 | 0.082 ± 0.005 | 0.056 ± 0.006 | 0.058 ± 0.006 |
| A 2 | (%) | 0.041 ± 0.004 | 0.042 ± 0.004 | 0.017 ± 0.005 | 0.014 ± 0.005 |
| A 3 | (%) | – | 0.011 ± 0.006 | 0.011 ± 0.006 | |
| A 4 | (%) | – | 0.031 ± 0.006 | 0.013 ± 0.006 | |
Notes. Baseline coefficents for the instrumental model are the x-position, airmass and sky level and for the polynomial baseline the coefficients are c1 to c3. P1 to P4 are the periods used for the stellar pulsations, and A1 to A4 are the corresponding amplitudes.
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