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Table 3
Priors and percentiles (16th, 50th, and 84th) of the posterior distributions concerning the analysis of the RV datasets of DS Tuc A (HARPS + ESPRESSO).
| Parameter | Prior | Best-fit values | |
|---|---|---|---|
| Quasi-periodic | SHO mixture | ||
| Stellar activity term | |||
| θ [d] |  |
 |
– |
| λ [d] |  |
 |
– |
| h [m s−1] |  |
 |
– |
| w |  |
 |
– |
| ln(A) |  |
– |  |
| Prot [d] |  |
– |  |
| ln(Q0) |  |
– | − 2.9 ± 0.4 |
| ln(ΔQ) |  |
– |  |
| f |  |
– |  |
| Planetary parameters | |||
| Kb [m s−1] |  |
 (<4.7, 68%) |
 (<13.1, 68%) |
| Pb [d] |  |
8.138268 ± 0.000011 | 8.138268 ± 0.000011 |
| Tb, conj [BJD-2 450 000] |  |
8332.30997 ± 0.00025 | 8332.30998 ± 0.00026 |
| Mass, mb [M⊕] | Derived | <14.4 (68%) | <40.3 (68%) |
| Density, ρb [g cm−3] | Derived | <0.44 (68%) | <1.25 (68%) |
| Instrument-related parameters | |||
| σjit, HARPS [m s−1] |  |
 |
 |
| σjit, ESPRESSO [m s−1] |  |
 |
 |
| γHARPS [m s−1] |  |
40 ± 26 |  |
| γESPRESSO [m s−1] |  |
 |
 |
Bayesian evidence,  |
–744.3 | –740.9 | |
References. (a) After Newton et al. (2019).
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