Table A.5
Parameters used in the analysis of K2-32 planets.
| Parameter | Prior | Posterior | |
|---|---|---|---|
| Dartmouth | PARSEC | ||
| (adopted) | |||
| Stellar Parameters | |||
| Effective temperature Teff [K] |  |
 |
 |
| Surface gravity log g [cgs] |  |
 |
 |
| Iron abundance [Fe/H] [dex] |  |
− 0.06 ± 0.03 | − 0.06 ± 0.03 |
| Distance to Earth D [pc] |  |
 |
 |
| Interstellar extinction E(B−V) [mag] |  |
 |
 |
| Systemic radial velocity γ [km s−1] |  |
 |
 |
| Linear limb-darkening coefficient ua | (derived) |  |
 |
| Quadratic limb-darkening coefficient ub | (derived) |  |
 |
| Stellar density ρ⋆∕ρ⊙ | (derived) |  |
 |
| Stellar mass M⋆ [M⊙] | (derived) |  |
 |
| Stellar radius R⋆ [R⊙] | (derived) |  |
 |
| Stellar age τ [Gyr] | (derived) |  |
 |
| Planet e Parameters | |||
| Orbital Period Pe [d] |  |
 |
 |
| Transit epoch T0,e [BJD - 2 450 000] |  |
 |
 |
| Radial velocity semi-amplitude Ke [m s−1] |  |
 |
 |
| Orbital inclination ie [°] |  |
89.0 ± 0.7 | 88.9 ± 0.7 |
| Planet-to-star radius ratio ke |  |
 |
 |
| Orbital eccentricity ee |  |
 |
 |
| Argument of periastron ωe [°] |  |
 |
 |
| System scale ae∕R⋆ | (derived) |  |
 |
| Impact parameter be | (derived) |  |
 |
| Transit duration T14,e [h] | (derived) |  |
 |
| Semi-major axis ae [AU] | (derived) |  |
 |
| Planet mass Me [M⊕] | (derived) |  |
 |
| Planet radius Re [R⊕] | (derived) |  |
 |
| Planet bulk density ρe [g cm−3] | (derived) |  |
 |
| Planet b Parameters | |||
| Orbital Period Pb [d] |  |
8.99200 ± 0.00008 | 8.99201 ± 0.00008 |
| Transit epoch T0,b [BJD - 2 450 000] |  |
 |
 |
| Radial velocity semi-amplitude Kb [m s−1 ] |  |
5.22 ± 0.60 | 5.22 ± 0.60 |
| Orbital inclination ib [°] |  |
 |
 |
| Planet-to-star radius ratio kb |  |
 |
 |
| Orbital eccentricity eb |  |
 |
 |
| Argument of periastron ωb [°] |  |
 |
 |
| System scale ab ∕R⋆ | (derived) |  |
 |
| Impact parameter bb | (derived) |  |
 |
| Transit duration T14,b [h] | (derived) | 3.49 ± 0.02 | 3.49 ± 0.02 |
| Semi-major axis ab [AU] | (derived) |  |
 |
| Planet mass Mb [M⊕ ] | (derived) |  |
 |
| Planet radius Rb [R⊕ ] | (derived) |  |
 |
| Planet bulk density ρb [g cm−3 ] | (derived) | 0.6 ± 0.1 | 0.6 ± 0.1 |
| 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) |  |
 |
| Impact parameter bc | (derived) |  |
 |
| Transit duration T14,c [h] | (derived) | 4.35 ± 0.05 | 4.35 ± 0.04 |
| 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] |  |
 |
 |
| Transit epoch T0,d [BJD - 2 450 000] |  |
 |
 |
| Radial velocity semi-amplitude Kd [m s−1 ] |  |
 |
 |
| Orbital inclination id [°] |  |
89.4 ± 0.1 | 89.4 ± 0.1 |
| Planet-to-star radius ratio kd |  |
 |
 |
| Orbital eccentricity ed |  |
 |
 |
| Argument of periastron ωd [°] |  |
 |
 |
| System scale ad ∕R⋆ | (derived) |  |
 |
| Impact parameter bd | (derived) |  |
 |
| Transit duration T14,d [h] | (derived) |  |
 |
| Semi-major axis ad [AU] | (derived) |  |
 |
| Planet mass Md [M⊕ ] | (derived) |  |
 |
| Planet radius Rd [R⊕ ] | (derived) |  |
 |
| Planet bulk density ρd [g cm−3 ] | (derived) | 0.9 ± 0.3 | 0.8 ± 0.3 |
| Instrument-related Parameters | |||
| HARPS jitter σj, RV [m s−1 ] |  |
 |
 |
| HIRES jitter σj, RV [m s−1 ] |  |
 |
 |
| PFS jitter σj, RV [m s−1 ] |  |
 |
 |
| HIRES offset [km s−1 ] |  |
 |
 |
| PFS offset [km s−1 ] |  |
 |
 |
| K2 contamination [%] |  |
 |
 |
| K2 jitter σj, K2 [ppm] |  |
63.4 ± 1.7 | 63.4 ± 1.6 |
| K2 out-of-transit flux |  |
 |
 |
| SED jitter [mag] |  |
 |
 |
Notes. The respective priors are provided together with the posteriors for the Dartmouth and PARSEC stellar evolution tracks. 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.
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