Fig. 1
HCO+ (J = 3–2) observations of our 13-disk subsample in Taurus. A vertical line above the spectrum indicates the central radial velocity υLSR for the detected emission, as determined from a Gaussian fit to the emission profile. In the case of the non-detection toward DR Tau, we indicate the expected υLSR based on our fit to its CN emission profile in Fig. 3.
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