ALMA observations of the velocity-integrated intensity (left panels) and peak brightness temperature (right panels) of the ¹² CO (top panels),¹³CO (middle panels), and C¹⁸O (bottom panels) J = 2−1 transition. The conversion from flux to brightness temperature was performed with the Planck law. The contours of the continuum are overplotted on top of the ¹² CO integrated intensity at 20, 100, and 130 σ (1 σ = 11 μJy beam⁻¹). The synthesized beam is shown in the bottom left corner of each panel.