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Table 8

Bayes factor (B01) for various retrievals for HD 189733b, which include a cloud deck at Ptop = 0.01 bar with a scattering slope of fmix = 1 × 102 × H2 scattering.

HD 189733b
Molecule C2H2 C2H4 CH4



log(VMR) –4 –6 –7 –4 –6 –7 –4 –6 –7
MIRI LRS >11 <1 <1 >11 <1 <1 >11 >1 <1
NIRISS SOSS >11 <1 <1 >11 <1 <1 >11 <1 <1
NIRCam F322W2 >11 >2.5 <1 >11 >2.5 <1 >11 >11 <1
NIRSpec G395M >11 >11 <1 >11 >11 <1 >11 >11 <1
NIRISS SOSS + NIRSpec G395M >11 >11 <1 >11 >11 <1 >11 >11 <1
NIRSpec G395m + MIRI LRS >11 >11 <1 >11 >11 <1 >11 >11 <1
NIRCam F322W2 + MIRI LRS >11 >5 <1 >11 >5 <1 >11 >11 <1

Notes. B01 > 11 indicates a very strong detection, B01 > 5 indicates a strong detection, B01 > 2.5 indicates a moderate detection, B01 > 1 indicates a weak detection, B01 < 1 indicates no detection.

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