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DCO+, DCN, and N2D+ reveal three different deuteration regimes in the disk around the Herbig Ae star HD 163296 | Astronomy & Astrophysics (A&A)
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Table 4

Best-fit model parameters.

Parameters DCN J = 3 − 2 N2D+J = 3–2 DCO+J = 3 − 2

R in 51 AU 139 AU 50 AU
R 1 118 AU
R 2 245 AU
R out 201 AU 287 AU 316 AU
X high 7.5 1.6
X low 1.1 4.0
X 3 6.0

Notes. Best-fit parameters of models as shown in Fig. 6. DCO+ values correspond to the model with two gaps. The formal errors are calculated at 90% confidence levels.

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