Fig. 2
CO detections: CO J = 1 → 0 and J = 2 → 1 spectra are shown for the target galaxies. Horizontal lines indicate the adopted baseline, while vertical lines mark the systemic (heliocentric) velocities as measured from the optical (dotted line) and in 21 cm (dashed lines). The velocity resolution δυ, CO transition, and the name of the galaxy are also labeled in each plot.
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