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Fig. 8

image

Position-velocity diagram for the CO J = 3−2 (left) and HCO+J = 3−2 (right) emission made using the disk center and position angle listed in Table 2. We use a dotted vertical red line to show the stellar position. The systemic velocity of –2.35 km s-1 is shown with an orange horizontal line. We show the Keplerian rotation curves for the two different estimates for stellar mass and distance from Merín et al. (2004; yellow: M = 1.59 M and d = 348 pc) and from Piétu et al. (2003; red: M = 2.1 M and d = 400 pc). The radial inner and outer extent of the curves is taken from the inner and outer radius of the emission listed in Table 3. We also overplot in both panels with gray vertical lines the radial distances of 0.34′′ and 0.63′′ to mark the band where the continuum emission is strongest.

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