Open Access
Table 1
Prior and posterior distributions for the combined photometric and spectroscopic analysis for the LTT 1445A planetary system.
| Parameter (unit) | Prior | Posterior (circular) | Posterior (eccentric) |
|---|---|---|---|
| planet b | |||
| Inferior conjunction (T0) (BJD-2457000) | 𝒰(1421,1426) |  |
 |
| Orbital period (P) (days) | 𝒰(5,6) |  |
 |
| Radius in stellar radii (Rp/R*) | 𝒰(0.02,0.1) |  |
 |
| Semimajor axis in stellar radii (a/R*) | 𝒰(10,200) |  |
 |
| Inclination (i) (deg) | 𝒰(0,90) |  |
 |
| Eccentricity (e) | 𝒰(0,1) | – |  |
| Argument of periastron (ω) (rad) | 𝒰(0,2Π) | – |  |
| Semi-amplitude (K) (m s−1) | 𝒰(0,10) |  |
 |
| planet c | |||
| Inferior conjunction (T0) (BJD-2457000) | 𝒰(1421,1426) |  |
 |
| Orbital period (P) (days) | 𝒰(2.5,3.5) |  |
 |
| Radius in stellar radii (Rp/R*) | 𝒰(0.02,0.1) |  |
 |
| Inclination (i) (deg) | 𝒰(0,90) |  |
 |
| Eccentricity (e) | 𝒰(0,1) | – |  |
| Argument of periastron (ω) (rad) | 𝒰(0,2Π) | – |  |
| Semi-amplitude (K) (m s−1) | 𝒰(0,10) |  |
 |
| planet d | |||
| Inferior conjunction (T0) (BJD-2457000) | 𝒰(1421,1450) |  |
 |
| Orbital period (P) (days) | 𝒰(23,25) |  |
 |
| Eccentricity (e) | 𝒰(0,1) | – |  |
| Argument of periastron (ω) (rad) | 𝒰(0,2Π) | – |  |
| Semi-amplitude (K) (m s−1) | 𝒰(0,10) |  |
 |
| Light curve model | |||
| Linear limb-darkening coefficient (u1) | 𝒰(0,1) |  |
 |
| Quadratic limb-darkening coefficient (u2) | 𝒰(0,1) |  |
 |
| RV model | |||
| Systemic RV ESPRESSO (γESP) (m s−1) | 𝒰(−50000, 50000) |  |
 |
| Systemic RV HARPS (γharps) (m s−1) | 𝒰(−50000, 50000) |  |
 |
RV slope ( ) (m s−1 day−1) |
𝒰(−10,10) |  |
 |
| RV jitter ESPRESSO (σESP) (m s−1) | 𝒰(0,1.5) |  |
 |
| RV jitter HARPS (σharps) (m s−1) | 𝒰(0.5,3) |  |
 |
| GP hyperparameters | |||
| Amplitude RV GP (m s−1) | 𝒰(0,20) |  |
 |
| Period RV GP(a) (Prot) (days) | 𝒰(0,200) | 72 | |
| Length RV GP(a) (Lact) (days) | 𝒰(0,200) | 72 | |
| Amplitude LC GP(b) log(days) | 𝒰(−20,20) |  |
|
| Period LC GP(b) (P) [days] | 𝒰(1,2) |  |
|
| Length LC GP(b) (L) log(days) | 𝒰(0,10) |  |
|
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