Fig. B.1

Upper limits on HD 56 μm line flux for the sample of Herbig Ae/Be disc systems (black lines) compared with our grid of DALI disc models (crosses). The top panels show the group I sources compared to models with flaring angle ψ = 0.3. The bottom panels show the group II sources compared to models with ψ = 0.0. Left: modelsare separated based on gas mass. Right: HD 2–1 upper limits set against 1.3 mm continuum fluxes for both observationsand models.
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