Table A.4.
Inferred system parameters.
Parameter | Units | Prior | Median and 68.3% CI | Prior | Median and 68.3% CI | Adopted |
---|---|---|---|---|---|---|
juliet | juliet | starry | starry | value | ||
Star (TOI-3884) | ||||||
Mean density, ρ⋆ | [g cm−3] | N(14.1, 1.4) | 14.3 ± 1.1 | N(14.1, 1.4) |
![]() |
juliet |
Inclination of the spin axis, i⋆ | [°] | U(0, 90) | 47.0 ± 8.5 | |||
Sky-projected spin-orbit angle, λ | [°] | U(90, 270) | 151 ± 11 | |||
Polar spot size, α | [°] | U(0, 90) | 48.6 ± 4.7 | |||
Polar spot contrast g’ | U(0, 0.9) | 0.664 ± 0.097 | ||||
Polar spot contrast TESS | U(0, 0.9) |
![]() |
||||
Polar spot contrast ExTrA | U(0, 0.9) | 0.159 ± 0.025 | ||||
q1 g’ | U(0, 1) |
![]() |
U(0, 1) | 0.51 ± 0.25 | starry | |
q2 g’ | U(0, 1) |
![]() |
U(0, 1) |
![]() |
starry | |
q1 TESS | U(0, 1) |
![]() |
U(0, 1) | 0.224 ± 0.13 | starry | |
q2 TESS | U(0, 1) |
![]() |
U(0, 1) |
![]() |
starry | |
q1 ExTrA | U(0, 1) |
![]() |
U(0, 1) |
![]() |
starry | |
q2 ExTrA | U(0, 1) | 0.54 ± 0.31 | U(0, 1) | 0.61 ± 0.25 | starry | |
Systemic velocity, γ | [km s−1] | U(8.31, 8.37) | 8.3444 ± 0.0015 | |||
Planet (TOI-3884 b) | ||||||
Semi-major axis, a | [au] | 0.0354 ± 0.0014 | ||||
Eccentricity, e | < 0.32†, (![]() |
U(0.0, 0.9) | < 0.19†, (![]() |
juliet | ||
Argument of pericentre, ω | [°] | 190 ± 150 | U(0, 360) |
![]() |
juliet | |
Inclination, ip | [°] |
![]() |
U(88, 92) | 90.10 ± 0.29 | starry | |
Radius ratio, Rp/R⋆ | U(0.1, 0.3) | 0.1899 ± 0.0064 | U(0.1, 0.3) | 0.1808 ± 0.0014 | starry | |
Scaled semi-major axis, a/R⋆ | 25.01 ± 0.65 | |||||
Impact parameter, b | U(0, 1) | 0.072 ± 0.072 | −0.04 ± 0.13 | starry | ||
Transit duration, T14 | [h] | 1.646 ± 0.011 | ||||
T0-2450000 | [BJDTDB] | U(9642.8624, 9642.8638) | 9642.86314 ± 0.00012 | |||
Orbital period, P | [d] | U(4.54447, 4.54468) | 4.5445697 ± 0.0000094 | |||
RV semi-amplitude, K | [m s−1] | U(0, 100) |
![]() |
|||
Radius, Rp | [![]() |
6.31 ± 0.28 | 6.00 ± 0.18 | starry | ||
Mass, Mp | [ME] |
![]() |
||||
Mean density, ρp | [g cm−3] |
![]() |
![]() |
starry | ||
Surface gravity, log gp | [cgs] | 2.612 ± 0.090 |
![]() |
starry | ||
Equilibrium temperature, Teq | [K] | 463 ± 12 | ||||
Insolation flux | [FE] | 7.42 ± 0.77 | ||||
True spin-orbit angle, ψ | [°] | 50 ± 12 or 130 ± 12 | ||||
![]() |
U(−1, 1) | −0.02 ± 0.33 |
![]() |
juliet | ||
![]() |
U(−1, 1) | −0.02 ± 0.12 | 0.057 ± 0.090 | juliet | ||
Dilution g’ | U(0, 1) |
![]() |
||||
Dilution TESS sector 22 | U(0, 1) | 0.683 ± 0.071 | ||||
Dilution TESS sector 46 | U(0, 1) | 0.893 ± 0.060 | ||||
Dilution TESS sector 49 | U(0, 1) | 0.880 ± 0.058 | ||||
Dilution ExTrA | U(0, 1) | 0.928 ± 0.057 |
Notes. The table lists: prior, posterior median, and 68.3% CI, for the analysis of transit photometry and RVs ( juliet, in which the asymmetry of the transit is modelled using GPs, and the chromaticity with dilution factors), and the analysis of transit photometry including a starspot in the model ( starry). If a parameter is estimated from both modellings, the last column specifies the adopted value. There is a degeneracy with (i⋆ + 180°) and (180° −λ) angles assuming ip between 0° and 180°. † Upper limit, 95% confidence. The parameters q1 and q2 are the quadratic limb-darkening coefficients parameterised using Kipping (2013). The planetary equilibrium temperature is computed for zero albedo and full day-night heat redistribution. The true spin-orbit angle is given for the prograde and retrograde configurations, which cannot be distinguished with the available data. IAU 2012: au = 149 597 870 700 m . IAU 2015: = 6.957 × 108 m,
= 6.378 1 × 106 m,
= 1.327 124 4 × 1020
m3 s−2,
= 3.986 004 × 1014
m3 s−2. M⊙ =
/𝒢, ME =
/𝒢. CODATA 2018: 𝒢 = 6.674 30 × 10−11
m3 kg−1 s−2. N(μ, σ): Normal distribution with mean μ, and standard deviation σ. U(a, b): A uniform distribution defined between a lower a and an upper b limit.
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