The second moment of the modeled spatial line profile for AS 205 (10 AU = 008 at a distance of 125 pc). The model in the left plot includes extended emission out to 30 AU and ΔVmod = 3 km s-1. The model in the right plot includes emission out to 10 AU and an increased ΔVmod = 7 km s-1 (see Fig. 5). Error bars represent the 3σ noise limit for AS 205 A in Fig. 18. Both models use the observed position angle of 115° which is 50° off from the position angle of 165° of the AS 205 A disk (Andrews et al. 2009).
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