CO 3–2 spectra observed with ALMA toward Cha-MMS1 in brightness temperature scale and smoothed over five channels. The spectra are taken toward three positions marked with yellow crosses in Fig. 1: (a) in the NE lobe, (b) at the peak of the continuum emission, and (c) in the SW lobe. The red and blue dashed lines correspond to the integration intervals defined in Sect. 3.2 while the black dashed line indicates the systemic velocity of Cha-MMS1, v_sys = 4.43 km s⁻¹ (Belloche et al. 2006).