Table 4
Best-fitting parameters of AU Mic b, as derived from the joint analysis of the three CHEOPS transit light curves.
| pycheops | TLCM1 | TLCM2 | P2020 | M2021 | ||||
|---|---|---|---|---|---|---|---|---|
| P [d] | 8.462995 | ± 3 ⋅ 10−6 | 8.462995 | (fixed) | 8.462995 | (fixed) | 8.46321 ± 4 ⋅ 10−5 | 8.46300 ± 2 ⋅ 10−6 |
| Rp/R* | 0.0531 | ± 0.0023 | 0.0534 | ± 0.0006 | 0.0534 | ± 0.0006 | 0.0514 ± 0.0013 | 0.0526 |
| a∕R* | 19.24 | ± 0.37 | 19.37 |  |
19.10 | |
19.1 |
19.1 |
| W [h] | 3.48 | ± 0.19 | 3.51 | ± 0.10 | 3.51 | ± 0.10 | 3.50 |
3.50 ± 0.08 |
| R⋆ [R⊙] | 0.75⋆ | ± 0.03 | 0.725 | ± 0.15 | 0.75⋆ | ± 0.03 | 0.75 (fixed) | 0.75 (fixed) |
| M⋆ [M⊙] | 0.50⋆ | ± 0.03 | 0.53 | ± 0.27 | 0.56 | ± 0.06 | 0.50 ± 0.03 | 0.50 (fixed) |
| Rp [R⊕] | 4.36 | ± 0.18 | 4.23 | ± 0.8 | 4.38 | ± 0.05 | 4.29 ± 0.20 | 4.07 ± 0.17 |
| a [AU] | 0.0678 | ± 0.0013 | 0.0692 | ± 0.0006 | 0.0704 | ± 0.0006 | 0.066 |
0.0645 ± 0.0013 |
| b | 0.09 | ± 0.05 | 0.00 | ± 0.13 | 0.00 | ± 0.13 | 0.16 |
0.18 ± 0.11 |
Notes. Quantities marked with an asterisk are priors. The orbital period was derived using the three CHEOPS and five TESS transit times (see Sect. 4.2 for details). The parameters are compared to the results of Plavchan et al. (2020, P2020) and Martioli et al. (2021, M2021).
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