Zeroth moment map of OH emission in the J = 29/2, F′ – F″ = 14–14 and 15–15 transitions. Left panels: F′ – F″ = 14–14 transition in R Hya and S Pav. Right panels: F′ – F″ = 15–15 transition in the same sources. Offsets in RA and Dec directions are relative to the coordinates of the peak: stellar continuum as given in Table 1. The velocity intervals in the F′ – F″ = 14–14 and 15–15 transitions are: −11.8 to −2. 6 km s⁻¹ and −12.2 to −1.7 km s⁻¹ in R Hya; −21. 1 to −13.8 km s⁻¹ and −21.2 to −11.9 km s⁻¹ in S Pav. In each map the white contours are at 3 and 5σ. The red contour delineates the extent at half peak intensity of the continuum emission. The line and continuum beams are shown at. the bottom left of each map in white and dark-red, respectively. The line HPBW in R Hya is as in Fig. 21; in S Pav the line HPBW is (25 × 20) mas at PA 11°. The continuum beam is (34 × 25) mas at PA 67° (R Hya) and (25 × 20) mas at PA −13° (S Pav).