PDR structure of the best-fit model for the Carina candidate proplyd 105-600. FUV radiation field is incoming from the left where the ionisation front is located at A_V = 0. The disk surface, represented by a vertical dashed black line, is located at A_V = 0.742. The small dark grey patch close to the disk surface illustrates the H/H₂ transition (10 to 90% of H in H₂) and the bright green patch illustrates the C⁺/CO transition (10 to 90% of C in CO). The dust temperature is given as a range corresponding to the temperature of the biggest to the lowest studied grains (radius of 3 to 300 nm). We note that the x-axis is in magnitude of visual extinction. In distance, the envelope represents about 11 000 AU while the green patch in the disk represents 300 AU.