Dynamical mass fitting of HH 48 NE. Left: rotation map of the ALMA CO J = 3−2 observations in HH 48 NE. The spatial offset on the axes is with respect to the telescope pointing (HH 48 SW; RA: 166.0953°, Dec: −77.30207°). The beam size is shown as a black ellipse in the bottom left corner (0″.51 × 0″.31). Right: residuals after subtracting the model from the observations. The gray ellipses indicate the regions we used for the fitting. The innermost two beams were masked to avoid confusion from beam dilution, and the outer radius was visually determined to avoid nondisk-like emission.