FUV spectral landscape of the Fe XII coronal forbidden lines. The left panel is for 1241; the right panel is for 1349. The coronal lines are hatched. The y-axis is the bolometrically normalized flux density. Five stars are in the comparison: Procyon (upper, green), α Cen A (middle, blue), α Cen B (lower middle, red), and the noncoronal red giants α Boo (K1 III; lower, orange) and γ Cru (M3 III; lower, black). The (shifted) zero-points of α Cen A and Procyon are thick blue tick marks at either side of the panels, those for α Boo and γ Cru are thick orange, and the α Cen B zero-point is red. The black curve in the left panel, partly covered by the α Cen A tracing, is a simulation of the C I recombination spectrum (same zero-point as A). Shaded vertical bands in both panels highlight incidental emission (and absorption) lines. The strong (unmarked) feature at 1242.8 Å is the longward component of hot subcoronal N V, weak or absent in the two red giants.