Distributions of 1.2 mm dust continuum emission toward MC27/L1521F. (a) Color scale shows 1.2 mm dust continuum image with the IRAM 30 m telescope using the MAMBO-2 bolometer at angular resolution of 14″. The angular resolution is given by the circle in the lower left corner. (b) Color scale image shows the 1.2 mm dust continuum image combining the ALMA data (the 12 m array + the 7 m array) with IRAM 30 m data. The angular resolution of the combined image is given by black ellipse in the lower left corner, 1.″3 × 0.″8. Black crosses in each panel represent the position of the Spitzer source.