Table A.6
Parameters used in the analysis of K2-233.
| Parameter | Prior | Posterior |
|---|---|---|
| Stellar Parameters | ||
| Initial mass Minit [M⊙] |  |
0.7929 ± 0.0072 |
| Stellar age τ [Gyr] |  |
0.6 ± 0.3 |
| Iron abundance [Fe/H] [dex] |  |
− 0.09 ± 0.03 |
| Distance to Earth D [pc] |  |
67.4 ± 0.3 |
| Interstellar extinction E(B−V) [mag] |  |
 |
| Systemic radial velocity γ [km s−1] |  |
 |
| Effective temperature Teff [K] | (derived) |  |
| Surface gravity log g [cgs] | (derived) | 4.640 ± 0.004 |
| Linear limb-darkening coefficient ua | (derived) |  |
| Quadratic limb-darkening coefficient ub | (derived) |  |
| Stellar density ρ⋆∕ρ⊙ | (derived) | 2.250 ± 0.035 |
| Stellar mass M⋆ [M⊙] | (derived) | 0.793 ± 0.007 |
| Stellar radius R⋆ [R⊙] | (derived) | 0.706 ± 0.005 |
| Planet b Parameters | ||
| Orbital Period Pb [d] |  |
2.46750 ± 0.00004 |
| Transit epoch T0,b [BJD - 2 450 000] |  |
 |
| Radial velocity semi-amplitude Kb [m s−1] |  |
 |
| Orbital inclination ib [°] |  |
 |
| Planet-to-star radius ratio kb |  |
 |
| Orbital eccentricity eb |  |
 |
| Argument of periastron ωb [°] |  |
 |
| System scale ab∕R⋆ | (derived) | 10.1 ± 0.1 |
| Impact parameter bb | (derived) |  |
| Transit duration T14,b [h] | (derived) | 1.99 ± 0.03 |
| Semi-major axis ab [AU] | (derived) |  |
| Planet mass Mb [M⊕] | (derived) |  |
| Planet radius Rb [R⊕] | (derived) |  |
| Planet bulk density ρb [g cm−3] | (derived) |  |
| Planet c Parameters | ||
| Orbital Period Pc [d] |  |
 |
| Transit epoch T0,c [BJD - 2 450 000] |  |
 |
| Radial velocity semi-amplitude Kc [m s−1 ] |  |
 |
| Orbital inclination ic [°] |  |
 |
| Planet-to-star radius ratio kc |  |
 |
| Orbital eccentricity ec |  |
 |
| Argument of periastron ωc [°] |  |
 |
| System scale ac ∕R⋆ | (derived) | 20.3 ± 0.1 |
| Impact parameter bc | (derived) |  |
| Transit duration T14,c [h] | (derived) |  |
| Semi-major axis ac [AU] | (derived) |  |
| Planet mass Mc [M⊕ ] | (derived) |  |
| Planet radius Rc [R⊕ ] | (derived) |  |
| Planet bulk density ρc [g cm−3 ] | (derived) |  |
| Planet d Parameters | ||
| Orbital Period Pd [d] |  |
24.36450 ± 0.00068 |
| Transit epoch T0,d [BJD - 2 450 000] |  |
 |
| Radial velocity semi-amplitude Kd [m s−1 ] |  |
 |
| Orbital inclination id [°] |  |
 |
| Planet-to-star radius ratio kd |  |
 |
| Orbital eccentricity ed |  |
 |
| Argument of periastron ωd [°] |  |
 |
| System scale ad ∕R⋆ | (derived) | 46.4 ± 0.2 |
| Impact parameter bd | (derived) |  |
| Transit duration T14,d [h] | (derived) | 3.84 ± 0.03 |
| Semi-major axis ad [AU] | (derived) |  |
| Planet mass Md [M⊕ ] | (derived) |  |
| Planet radius Rd [R⊕ ] | (derived) |  |
| Planet bulk density ρd [g cm−3 ] | (derived) |  |
| Instrument-related Parameters | ||
| HARPS jitter σj, RV [m s−1 ] |  |
0.84 ± 0.53 |
| K2 contamination [%] |  |
 |
| K2 jitter σj, K2 [ppm] |  |
49.6 ± 0.7 |
| K2 out-of-transit flux |  |
 |
| SED jitter [mag] |  |
 |
| Gaussian Process Hyperparameters | ||
| A [m s−1 ] |  |
19.8 ± 3.1 |
| λ1 [d] |  |
16.39 ± 1.30 |
| λ2 |  |
0.574 ± 0.058 |
| Prot |  |
9.638 ± 0.083 |
Notes. The respective priors are provided together with the posteriors. Only the PARSEC stellar evolution tracks were used. The posterior values represent the median and 68.3% credible interval. Derived values that might be useful for follow-up work are also reported.
∙
: normal distribution with mean μ
and width σ2;
∙
: uniform distribution between a
and b;
∙
: sine distribution between a
and b, corresponding to 
;
∙
: Truncated normal distribution with mean μ
and width σ2, between a
and b.
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.