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Fig. 9

image

Observed and modelled spectrum of V883 Ori. Top panel: observed and stacked spectrum of V883 Ori (black) and a fit of the CH3CHO emission (red). Bottom panel: spectrum where the CH3CHO emission is subtracted. The H13CO+ J = 4− 3 emission line(vertical dark blue line) is blended with the CH3CHO lines (vertical pink lines). The 3σ noise level is indicated with the horizontal grey line.

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