Table 3
Properties of the TOI-178 b, c, and d planets based on our global transit analysis (see Sect. 4.1).
| Parameter (unit) | Leleu et al. (2021a) | This work |
|---|---|---|
| TOI-178 | ||
| Transit depth, dF (ppm) |  |
 |
| Transit impact parameter, b (R⋆) |  |
 |
| Orbital period, P (d) | 1.914558 ± 0.000018 |  |
| Mid-transit time, T0 (BJDTDB − 2 450 000) |  |
 |
| Transit duration, W (h) |  |
 |
| Orbital inclination, ip (deg) |  |
 |
| Orbital semi-major axis, ap (au) | 0.02607 ± 0.00078 |  |
| Scale parameter, ap/R⋆ |  |
 |
| Radius, Rp (R⊕) |  (6.3%) |
1.142 ± 0.058 (5.1%) |
| Stellar irradiation, Sp (S⊕) | – | 198 ± 14 |
| TOI-178 c | ||
| Transit depth, dF (ppm) |  |
 |
| Transit impact parameter, b (R⋆) |  |
0.24 ± 0.14 |
| Orbital period, P (d) |  |
3.238449 ± 0.000011 |
| Mid-transit time, T0 (BJDTDB − 2 450 000) |  |
8 926.0680 ± 0.0011 |
| Transit duration, W (h) |  |
 |
| Orbital inclination, ip (deg) |  |
 |
| Orbital semi-major axis, ap (au) | 0.0370 ± 0.0011 |  |
| Scale parameter, ap/R⋆ |  |
 |
| Radius, Rp (R⊕) |  (6.8%) |
 (3.1%) |
| Stellar irradiation, Sp (S⊕) | – | 98.3 ± 7.2 |
| Orbital eccentricity (TTVs), ep | – |  |
| TOI-178 d | ||
| Transit depth, dF (ppm) |  |
 |
| Transit impact parameter, b (R⋆) |  |
 |
| Orbital period, P (d) | 6.557700 ± 0.000016 | 6.557721 ± 0.000013 |
| Mid-transit time, T0 (BJDTDB − 2 450 000) |  |
8 760.26373 ± 0.00074 |
| Transit duration, W (h) |  |
 |
| Orbital inclination, ip (deg) |  |
 |
| Orbital semi-major axis, ap (au) | 0.0592 ± 0.0018 |  |
| Scale parameter, ap/R⋆ |  |
 |
| Radius, Rp (R⊕) |  (3.0%) |
 (2.4%) |
| Stellar irradiation, Sp (S⊕) | — | 38.4 ± 2.8 |
| Orbital eccentricity (TTVs), ep | — |  |
Notes. For planets c and d, we also give the eccentricities derived from our TTV analysis (see Sect. 5). For each parameter, we indicate the median of the posterior distribution, along with the 1σ credible intervals. For the planetary radii, we also give the relative uncertainties in brackets.
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