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Fig. 4

image

Spectra of detected molecules over ten points around the AB Aur disk. In color gradient, the C18O J = 2 → 1 integrated intensity map from Fig. 1. Contour levels are from 40% to 90% in steps of 10% the maximum (15 K × km s-1). The position of the central source is marked by a red star. The arrow indicates the direction of the ionized jet (Rodríguez et al. 2014). The ten boxes labeled from A to K show the spectra of the 13CO J = 2 → 1, C18O J = 2 → 1, SO J = 56 → 45, and H2CO J = 30,3 → 20,2 lines toward selected positions. We note that the SO emission is extremely weak (even undetected) toward the southwest.

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