Table 4
Fitted and derived parameters of the HD 108236 system from CHEOPS and TESS transits.
| HD 108236 | |||||
|---|---|---|---|---|---|
| Quadratic L. D. Coeff. | q1 | q2 | q1 | q2 | |
| CHEOPS |  |
 |
TESS |  |
 |
| Fitted parameter | Planet b | Planet c | Planet d | Planet e | Planet f |
| Orbital period, P(a) [d] |  |
 |
 |
 |
 |
| T0(a) [BJD-2450000.] |  |
 |
 |
 |
 |
| Rp/R★ |  |
 |
 |
 |
0.01979 ± 0.00043 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| Impact parameter, b [R★] |  |
 |
 |
 |
 |
| Derived parameter | |||||
| Rel. semi-major axis, a/R★ |  |
 |
 |
 |
 |
| Eccentricity, e |  |
 |
 |
 |
 |
| Arg. of periastron, ω [°] |  |
 |
 |
 |
 |
| Orbital inclination, i [°] | 88.23 ± 0.32 | 88 8 ± 0 2 | 88.8 ± 0.1 | 89.3 ± 0.1 | 89.07 ± 0.03 |
| Planet radius [R⊕] | 1.587 ± 0.028 | 2 122 ± 0 025 | 2.629 ± 0.031 | 3.008 ± 0.032 | 1.89 ± 0.04 |
| Semi-major axis, a [AU] | 0.0451 ± 0.0004 | 0 0626 ± 0 0006 | 0.1087 ± 0.0010 | 0.1348±0.0012 | 0.1773 ± 0.0016 |
| Equilibrium temp. Teq (b) [K] | 1202 ± 13 | 1021 ± 11 | 775 ± 8 | 696 ± 8 | 607 ± 7 |
| Transit duration, TI-IV [h] | 2.45 ± 0.06 | 2 93 ± 0 06 | 3.52 ± 0.08 | 4.16±0.07 | 3.8 ± 0.1 |
Notes. The fitted parameters were obtained via the simultaneous modeling of CHEOPS and TESS light curves with juliet package (Sect. 4). For the estimation of the derived parameters, we used the astronomical constants as defined in the python library astropy.constants. (a)The final and adopted values for P and T0, which are based on the timing analysis of the transits are reported in Table 5. (b)Mean temperature calculated using AB =0.
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