Integrated intensity maps toward Cha-MMS1 (black cross) of the high-velocity redshifted CO 3–2 gas [15.0, 21.8] km s⁻¹ shown with red contours and the low-velocity redshifted CO 3–2 gas [9.1, 11.6] km s⁻¹ shown in grayscale and with black contours. The contour levels are − 3σ, 3σ, 6σ, 12σ, and 24σ with σ = 0.7 mJy beam⁻¹ km s⁻¹ and 1.1 mJybeam⁻¹ km s⁻¹ for the emissions at high velocities and low velocities, respectively. The green crosses K1–K6 mark the positions at which the spectra in Figs. 3c–h were taken. The HPBW is shown in the bottom left corner. The black cross marks the position of the continuum peak.