Open Access
Table 3
GP-based ESPRESSO RV models tested in this work, and the corresponding best-fit values of RV semi-amplitudes for the three transiting planets b, c, and d.
| Model ID(a) | Description | ln 𝒵(b) | Kp [m s−1] |
|---|---|---|---|
| M1 | Three Keplerians; two RV offsets and jitters | −167.3 | Kb = 2.8 ± 0.2 |
| Kc = 2.1 ± 0.1 | |||
| Kd = 1.9 ± 0.1 | |||
| M2 | As M1, but with eb,c,d fixed to zero (circular orbits) | −159.8 | Kb = 2.8 ± 0.2 |
| Kc = 2.1 ± 0.1 | |||
| Kd = 1.9 ± 0.1 | |||
| M3 | Three circular orbits (planets b, c, and d), one Keplerian (signal x); two RV offsets and jitters | −158.1 | Kb = 2.8 ± 0.2 |
| Kc = 2.1 ± 0.1 | |||
| Kd = 1.9 ± 0.1 | |||
| Kx = 3.1 ± 1.6 | |||
| M4 | As M3, but with ex fixed to zero | −159.2 | Kb = 2.8 ± 0.2 |
| Kc = 2.1 ± 0.1 | |||
| Kd = 1.9 ± 0.1 | |||
| Kx = 1.6 ± 0.8 | |||
| MFWHM, 1 | Three planets on circular orbits; two RV offset/jitter; | −406.9 |  |
| GP QP stellar activity term trained on the FWHM | Kc = 2.1 ± 0.1 | ||
| Kd = 1.9 ± 0.1 | |||
| MFWHM, 2 | Three planets on circular orbits, plus an additional sinusoidal signal x; two RV offset/jitter; | −406.4 | Kb = 2.8 ± 0.2 |
| GP QP stellar activity term trained on the FWHM | Kc = 2.1 ± 0.1 | ||
| Kd = 1.9 ± 0.1 | |||
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