Overall geometry of the “slow” MHD disk wind solution of (Casse & Ferreira 2000) used in this article. Solid white curves show various magnetic flow surfaces, with that anchored at 1 AU shown in dashed. The density for Ṁ_acc = 10^-6   M_⊙/yr and M_⋆ = 0.5   M_⊙, is coded in the contour plot starting at 8  ×  10⁴   cm^-3 and increasing by factors of 2. The bottom dotted line traces the slow magnetosonic surface (at 1.7 disk scale heights) where our chemical integration starts.