Table A.6
Statistical metrics for the transmission spectra of KIC 10657664B and KIC 9164561B.
KIC 10657664B | ||||||||
---|---|---|---|---|---|---|---|---|
Reference star | Noise model | Common-mode removal technique | Median RMSE/εph(1) | Median ![]() |
Mean R2/R1(3) | t-score (σ) of the offset(4) | Feature(5) | ![]() |
REF-A1 | GP-M32 | direct-fit | 1.09 | 0.0021 | 0.08008 ± 0.00030 | 2.9 | Flat | 0.36 |
divide-white | 1.06 | 0.0018 | 0.08291 ± 0.00024 | 7.2 | Flat | 1.12 | ||
divide-rescaled | 1.06 | 0.0015 | 0.08264 ± 0.00030 | 5.2 | Flat | 0.87 | ||
BF#1 | direct-fit | 1.10 | 0.0026 | 0.07729 ± 0.00060 | 6.1 | Flat | 1.57 | |
divide-white | 1.06 | 0.0024 | 0.07727 ± 0.00057 | 6.5 | Flat | 1.69 | ||
divide-rescaled | 1.06 | 0.0025 | 0.07712 ± 0.00058 | 6.6 | Flat | 1.79 | ||
REF-A2 | GP-M32 | direct-fit | 1.32 | 0.0090 | 0.07777 ± 0.00180 | 1.8 | Flat | 0.54 |
divide-white | 1.13 | 0.0021 | 0.08362 ± 0.00028 | 8.9 | Flat | 0.91 | ||
divide-rescaled | 1.13 | 0.0016 | 0.08333 ± 0.00024 | 9.0 | Nonlinear | 1.00 | ||
BF #1 | direct-fit | 1.34 | 0.0035 | 0.07950 ± 0.00082 | 1.8 | Flat | 1.16 | |
divide-white | 1.28 | 0.0034 | 0.07754 ± 0.00078 | 4.4 | Flat | 1.19 | ||
divide-rescaled | 1.33 | 0.0032 | 0.07782 ± 0.00076 | 4.1 | Flat | 1.01 | ||
REF-A3 | GP-M32 | direct-fit | 1.17 | 0.0105 | 0.08389 ± 0.00241 | 1.2 | Flat | 0.26 |
divide-white | 1.07 | 0.0019 | 0.08239 ± 0.00034 | 3.9 | Nonlinear | 0.73 | ||
divide-rescaled | 1.07 | 0.0016 | 0.08280 ± 0.00033 | 5.3 | Flat | 1.49 | ||
BF #1 | direct-fit | 1.25 | 0.0035 | 0.07188 ± 0.00079 | 11.4 | Flat | 1.11 | |
divide-white | 1.18 | 0.0035 | 0.07421 ± 0.00076 | 8.8 | Flat | 1.22 | ||
divide-rescaled | 1.19 | 0.0037 | 0.07449 ± 0.00080 | 8.1 | Flat | 1.28 | ||
REF-A4 | GP-M32 | direct-fit | 1.41 | 0.0137 | 0.08144 ± 0.00297 | 0.1 | Flat | 0.14 |
divide-white | 1.12 | 0.0035 | 0.08396 ± 0.00057 | 5.1 | Flat | 0.82 | ||
divide-rescaled | 1.11 | 0.0035 | 0.08422 ± 0.00050 | 6.3 | Flat | 1.32 | ||
BF #1 | direct-fit | 1.48 | 0.0035 | 0.06140 ± 0.00076 | 25.5 | Flat | 1.45 | |
divide-white | 1.20 | 0.0032 | 0.07124 ±0.00073 | 13.3 | Flat | 0.91 | ||
divide-rescaled | 1.21 | 0.0035 | 0.07071 ± 0.00077 | 13.3 | Flat | 1.22 | ||
KIC 9164561B | ||||||||
REF-B1 | GP-M32 | direct-fit | 1.18 | 0.0187 | 0.10197 ± 0.00404 | 1.6 | Flat | 0.14 |
divide-white | 1.09 | 0.0022 | 0.11125 0.00049 | 1.3 | Linear | 0.59 | ||
divide-rescaled | 1.19 | 0.0029 | 0.11204 ± 0.00063 | 1.7 | Flat | 0.95 | ||
GP-SHO | direct-fit | 1.20 | 0.0077 | 0.10833 ± 0.00171 | 0.3 | Flat | 0.08 | |
divide-white | 1.12 | 0.0022 | 0.11012 ± 0.00044 | 0.6 | Linear | 0.46 | ||
divide-rescaled | 1.15 | 0.0025 | 0.11137 ± 0.00051 | 1.4 | Flat | 0.70 | ||
BF-SIN | direct-fit | 1.43 | 0.0044 | 0.10824 ±0.00083 | 0.5 | Nonlinear | 3.11 | |
divide-white | 1.21 | 0.0010 | 0.11228 ± 0.00019 | 2.0 | Nonlinear | 2.84 | ||
divide-rescaled | 1.21 | 0.0012 | 0.11192 ± 0.00023 | 1.7 | Nonlinear | 1.52 |
Notes. (1) Median ratio of the RMSE and the expected amplitude of photon-dominated noise in spectroscopic light-curve fitting. (2) Median uncertainty of the transmission spectrum. (3) Weighted mean of the derived transmission spectrum. (4) t-score for the null hypothesis that the averaged spectrum is consistent with the white-light radius ratio. (5) “Flat” if the best-fit polynomial of the derived spectrum is zeroth-order; “Linear” if it is first order; “Nonlinear” if it is second or higher order. (6) Reduced χ2 of the best-fit polynomial for the derived spectrum.
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