Table 2
Properties of the HD 209458 and WASP-76 system used in our analysis.
| Parameter | Symbol | Value | Unit | |
|---|---|---|---|---|
| HD 209458 | WASP-76 | |||
| Star | ||||
| Spectral type | F7 | F9 | ||
| Radius | R* | 1.160[1] | 1.77 [4] | R⊙ |
| Microturbulence velocity | ξ | 1.03 [1] | 1.38 [4] | km s−1 |
| Effective temperature | Teff | 6069 [1] | 6316 [4] | K |
| Surface gravity | log g | 4.41 [1] | 4.13 [4] | cgs |
| Metallicity | [Fe/H] | 0.02[1] | 0.34 [4] | |
| Projected rotational velocity | v sin i* | 4.272 [0] | 0.86 [0] | km s−1 |
| Limb-darkening coefficients | u1 | 0.380 [1] | 0.393 [5]/Chromatic [6](‡) | |
| u2 | 0.234[1] | 0.219 [5]/Chromatic [6](‡) | ||
| Stellar reflex motion amplitude | K* | 84.27 [2] | 116.02 [5] | m s−1 |
| Planet | ||||
| Orbital period | P | 3.52474859 [2] | 1.80988198 [5] | days |
| Eccentricity | e | 0 [2] | 0[5] | |
| Argument of periastron | ω | 90 [2] | 90 [5] | deg |
| Mid-transit time | T0-2 450 000 | 4560.80676 [1](†) | 8080.626165 [5] | BJDTDB |
| Orbital inclination | i | 86.71 [1](†) | 89.623 [5] | deg |
| Scaled semi-major axis | ap/R* | 8.90 [1](†) | 4.08 [5] | |
| Projected spin-orbit angle | λ | 1.06 [0] | -37.1 [0] | deg |
| Planet-to-star radius ratio | Rp/R* | 0.12086 [3] | 0.10852 [5] / Chromatic [6](‡) | |
Notes. [0] Our work; [1] Casasayas-Barris et al. (2021); [2] Bonomo et al. (2017); [3] Torres et al. (2008); [4] Tabernero et al. (2021); [5] Ehrenreich et al. (2020); [6] Fu et al. (2021) (†)We use the values adjusted from the RM analysis in [1]. (‡)We use the values measured at low spectral resolution by [6].
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