Table 5
List of free parameters used in the PASTIS analysis of the light curves, radial velocities and SED with their associated prior.
Parameter | K2-30 | K2-34 |
Orbital parameters | ||
Orbital period P [d] |
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Epoch of first transit T0 [BJDTDB] − 2 450 000 |
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Orbital eccentricity e | β(0.867;3.03) | 0 (fixed) |
Argument of periastron ω [°] |
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– |
Inclination i [°] |
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Planetary parameters | ||
Radial velocity amplitude K [m/s] |
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Planet-to-star radius ratio a/R⋆ |
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Stellar parameters | ||
Effective temperature Teff [K] |
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Surface gravity log g [g/cm2] |
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Iron abundance [Fe/H] [dex] |
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Reddening E(B−V) [mag] |
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Systemic radial velocity Vsys [km s-1] |
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Distance to Earth d [pc] |
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Linear limb darkening coefficient ua |
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Quadratic limb darkening coefficient ub |
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Instrumental parameters | ||
CAFE radial velocity jitter σRV,CAFE [m/s] | – |
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SOPHIE radial velocity jitter σRV,SOPHIE [m/s] |
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HARPS-N radial velocity jitter σRV,HARPS−N [m/s] |
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CAFE – SOPHIE radial velocity offset ΔRVS, CAFE [m/s] |
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HARPS-N – SOPHIE radial velocity offset ΔRVS, H−N [m/s] |
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SED jitter σSED [mag] |
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Notes. is a normal distribution with mean μ and width σ2,
is a uniform distribution between a and b,
is a sine distribution between a and b, β(a;b) is a Beta distribution with parameters a and b, and
is a power-law distribution of exponent n between a and b.
Reference. The choice of prior for the orbital eccentricity is described in Kipping (2013).
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