Open Access
Table 1
Properties of the MASCARA-4 system.
| Parameter | Value |
|---|---|
| Stellar Parameters | |
| Effective temperature, Teff (K)(1) | 7800 ± 200 |
| Stellar mass, M* (M⊙)(1) | 1.75 ±0.05 |
| Stellar radius, Rt (R⊙)(2) | 1.79 ± 0.04 |
| Surface gravity, log(g)(1) | 4.10 ± 0.05 |
| Projected spin, v sin i* (km s−1) | 43.0 ± 0.1 (Spectral) |
 (RMreloaded) |
|
| Differential rotation, α | 0.09 ± 0.03 (RM reloaded) |
| Limb-darkening coeff., u1 | 0.333 |
| Limb-darkening coeff., u2 | 0.332 |
| Updated system parameters | |
| RV amplitude, K (m s−1) | 165.9 ± 23.7 |
| Mid-transit time, T0 (BJD) | 2458909.66419 ± 0.00046 |
| Transit duration, T14 (day) | 0.1654 ± 0.0013 |
| Orbital period, P (day) | 2.8240932 ± 0.0000046 |
| Radius ratio, Rp/R* | 0.0869 ± 0.0015 |
| Impact parameter, b | 0.309 ± 0.044 |
| Orbital inclination , ip (deg) | 86.89 ± 0.49 |
| Semi-major axis, a (au) | 0.0474 ± 0.0013 |
| a/R* |  |
| Spin-orbit angle, λ (deg) | 250.34 ± 0.14 |
| Updated planet parameters | |
| Planetary radius, Rp (RJup) | 1.515 ± 0.044 |
| Planetary mass, Mp (MJup) | 1.675 ± 0.241 |
| Planetary density, ρp (ρJup) |  |
| Surface gravity, gp (m s−2) | 18.1 ± 2.9 |
| Equilibrium temperature, Teq (K) | 2250 ± 62 |
| Semi-amplitude velocity, Kp (km s−1) | 182±5 |
References.(1) Dorval et al. (2020);(2) Ahlers et al. (2020).
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