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Fig. 11.

image

Investigation of the parameter degeneracies between αin, αout , g, H0R0 , and inclination. Red dots mark the location of the spine measured in all 4 × 4 binned imaging data as a vertical offset of the Moffat profile peak (see Sect. 4.3 for detailed description). Panel a: impact of varying αin on the spine location of the model with fixed parameters g = 0.4, αout = −4, H0R0 = 0.03, incl = 86°. Panel b: impact of varying αout on the spine location of the model with fixed parameters g = 0.4, αin = 6, H0R0 = 0.03, incl = 86°. Panel c: impact of varying g on the spine location of the model with fixed parameters αin = 6, αout = −4, H0R0 = 0.03, incl = 86°. Panel d: impact of varying H0R0 on the spine elevation of the model with fixed parameters αin = 6, αout = −4, g = 0.4, incl = 86°. Panel e: impact of varying inclination on the spine location of the model with fixed parameters αin = 6, αout = −4, g = 0.4, H0R0 = 0.03. Panel f: comparison of the two best-fitting one-belt models and the two-belts model with the data. The parameters of the model best tracking the spine are g = 0.6, αin = 4, αout = −7, H0R0 = 0.03, incl = 86°. The second best model has g = 0.5, αin = 3, αout = −7, H0R0 = 0.01 and incl = 86°.

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