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The First Detection of ^13C^17O in a Protoplanetary Disk: A Robust Tracer of Disk Gas Mass

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Figure

Figure 1. a) The 1.25 mm continuum image from Isella et al. (2018). b) The matched filter response for the 13 C 17 O J=3-2 detection where the black line marks the frequency of the hyper-fine transitions
Figure 2. The disk physical structure from Qi et al. (2011). a) The n H density. b) The gas temperature
Figure 3. a-e) The de-projected and azimuthally averaged radial profiles of the observed and modelled CO lines
Figure 4. Toomre Q parameter for the new disk mass we derive in Model 2 and extrapolated back to 0.1 Myr

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