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Table B.2

Priors and posterior distributions for the radial velocity analysis (see Sect. 3.2).

Parameter Prior 2p+GP 3p+GP
LHS 1140 b
Orbital period, Pb (days) (24.736959,0.1)
       
Time of mid-transit, T0,b − 2 400 000 (days) (56915.71154,0.1)
RV semi-amplitude, Kb (m s−1) (0.0,20.0)
       
Orbital eccentricity, eb Fixed (0.0) <0.096 <0.086
Arg. periastron, ωb (deg.) Fixed (90°)
Planet mass, mb sin ib (M) (derived)
       
LHS 1140 c
Orbital period, Pc (days) (3.777931,0.1)
       
Time of mid-transit, T0,c − 2 400 000 (days) (58226.843169,0.1)
       
RV semi-amplitude, Kc (m s−1) (0.0,10.0)
       
Orbital eccentricity, ec Fixed (0.0) <0.274 <0.252
Arg. periastron, ωc (deg.) Fixed (90°)
Planet mass, mc sin ic (M) (derived)
       
LHS 1140 d (candidate)
Orbital period, Pd (days) (70.0,120.0)
Time of mid-transit, T0,d − 2 400 000 (days) (58350.0,58400.0)
       
RV semi-amplitude, Kd (m s−1) (0.0,10.0)
Orbital eccentricity, ed Fixed (0.0) <0.45
Arg. periastron, ωc (deg.) Fixed (90°)
Planet mass, md sin id (M) (derived)
Instrument parameters
δESPRESSOpre (m s−1) (-15.0,-10.0)
       
δESPRESSOpost (m s−1) (-15.0,-10.0)
       
δHARPSc (m s−1) (-15.0,-10.0)
       
σESPRESSOpre (m s−1) (0.0,0.005)
       
σESPRESSOpost (m s−1) (0.0,0.005)
       
σHARPSc (m s−1) (0.0,0.005)
       
δFWHM,ESPRESSOpre (km s−1) (3.8,0.1)
       
δFWHM,ESPRESSOpost (km s−1 (3.8,0.1)
       
δFWHM,HARPSc (km s−1) (3.0,0.1)
       
σFWHM,ESPRESSOpre (m s−1) (0.0,0.01)
       
σFWHM,ESPRESSOpost (m s−1) (0.0,0.01)
       
σFWHM,HARPSc (m s−1) (0.0,0.01)
GP hyperparameters
η1,FWHM (m s−1) (-6.0,6.0)
       
η1 (m s−1) (-5.0,5.0)
       
η2 (days) (100.0,500.0)
       
η3 (days) (131.0,5.0)
       
η4 (-2.0,2.0)

Notes. : normal distribution with mean μ and width σ2. : uniform distribution between a and b. : log-uniform distribution between a and b. : truncated normal distribution with mean μ and width σ2, between a and b.

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