Table 6
Model parametrisations and priors.
| Notation | Name | Prior |
|
|
||
| System parameters, passband independent | ||
| T c | transit centre |
|
| P | orbital period |
|
| ρ ⋆ | stellar density |
|
| b | impact parameter |
|
| Uninformative priors, passband dependent | ||
| k 2 | area ratio |
|
| q 1 | limb darkening q1 |
|
| q 2 | limb darkening q2 |
|
| Uninformative priors, light curve dependent | ||
| c b | baseline constant |
|
| c t | linear time coefficienta |
|
| c x | linear airmass coefficienta |
|
| GP hyperparametersb, night dependent | ||
| log γx | log GP airmass scale |
|
| log aα | log GP rotator angle amplitude |
|
| log γα | log GP rotator angle input scale |
|
Notes. 𝒰(a,b stands for a uniform prior from a to b, where a and b are omitted when the range is chosen to be wide enough not to affect the posteriors. 𝒩(μ,σ) stands for a normal prior with mean μ and standard deviation σ. The system parameters have normal priors with means and standard deviations corresponding to the values shown in Table 3.
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