Channel maps of the¹²CO (2−1) emission in binned, 0.8 km s⁻¹ wide channels around the velocity offsets Δυ from υ₀ = 5.95 km s⁻¹ indicated on top. Top row: observed total emission (see Fig. A.1); middle row: disk model (see Sect. 4.1 and Fig. A.2); bottom row: residuals, that is, observed total emission with disk model subtracted. Blue contours indicate negative velocity offsets, red contours positive ones. CO contours start at 15 mJy beam⁻¹ (left and middle panels), and 40 mJy beam⁻¹ (right panels) and are spaced by 15 mJy beam⁻¹. Blue and red arrows in the lower left panel show the inclination orientation of the disk and outflow. Black contours show the 230 GHz dust continuum emission from the disk at 2.5, 7.5, and 15 mJy beam⁻¹. Synthesized FWHM beam sizes are shown as gray ellipses in the lower right corner of the lower left panel (dark gray: CO, light gray: dust). The underlying gray-scale image shows the NIR K-band image of the bipolar reflection nebula (see Fig. 1).