Table 2
Summary of the different RV (DRS) + transit photometry + activity diagnostics (when specified) models tested in this work.
| Model ID | Description | Bayesian evidence(a) (ln 𝒵) | Planetary mass(b) M⊕ | Planetary density g cm-3 |
|---|---|---|---|---|
| M1 | GP quasi-periodic kernel applied to RVs | 103927.9 ± 0.6 |  |
 |
 |
 |
|||
| M2 | GP quasi-periodic kernel applied to RVs, with a different set | 103925.5 ± 0.6 |  |
 |
| of hyper-parameters (h,w,λ) for each observing season |  |
 |
||
| M3 | GP quasi-periodic kernel trained (c) on BIS | 103417.5 ± 0.6 |  |
 |
 |
ρc = 7.4 ± 2.8 (12.0) | |||
| M4 | GP quasi-periodic trained (c) on log  |
104237.8 ± 0.6 |  |
 |
| mc = 18.9 ± 7.0 (30.4) |  |
|||
| M5 | Multi-dimensional GP framework (d) | 836.6 ± 0.3 |  |
 |
using log  and BIS, and the quasi-periodic kernel; circular orbits |
 |
 |
||
| M6 | Multi-dimensional GP framework (d) | 565.6 ± 0.5 |  |
 |
using log  and the quasi-periodic kernel; circular orbits |
 |
 |
||
| M7 | GP dSHO kernel applied to RVs | 103923.6 ± 0.5 |  |
 |
 |
 |
|||
| M8 | GP QPC kernel applied to RVs | 103928.1 ± 0.6 |  |
 |
 |
 |
|||
| M9 | Activity corrected through a linear regression fit between RVs and BIS | 103991.2 ± 0.5 |  |
 |
| mc = 8.4 ± 4.9 (16.7) | ρc = 3.1 ± 1.8 (6.3) |
Notes. All include two Keplerians for planets b and c, except for models M5 and M6, for which we adopted circular orbits. (a) We note that the analysed datasets related to each model are not always the same, therefore model comparison based on the values of the Bayesian evidence ln 𝒵 can be performed only when the same datasets are involved. (b) The 95th percentile is provided in parenthesis. (c) With "trained" we mean that the same GP kernel is used to model the RVs and the activity diagnostic. In the case of a quasi-periodic kernel, three hyper-parameters over four, namely theta, w, and λ, are shared by the two datasets, while two distinct amplitudes h are used. (d) To speed up the analysis, we did not fit the photometric transits, and we assumed circular orbits (the results from other models show that the eccentricities are consistent with zero). The priors for the planet ephemeris are defined based on the results of the M4 model. We adopted planet radii calculated from M4 to derive the densities.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.