Comparison of absorption and emission lines of water with υ = 1, CO(2–1) absorption in R Hya. Left: panel: Magenta and cyan dashed contours delineate the −5σ levels of the 244.330 GHz (line 5) and 259.952 GHz (line 10) mom 0 absorption maps. The underlying map is the mom 0 absorption map of υ = 1, CO(2−1) with the yellow dashet contour at the −3σ level. The line beam width is 550 × 28 mas with 70° orientation (white ellipse in bottom left corner The red solid contour delineates the 50% level of the peak continuum emission (the continuum beam width is the dark-red ellipse in the bottom left corner). Right panel: the magenta dashed contour and red solid contour indicate the 244.330 GHz absorption and mm-wave continuum emission as in the left panel. The underlying map is the 259.952 GHz mom 0 emission, with the white solid contours at the 20 and 35σ levels. (Line and continuum beam widths as in the left panel.) The noise level is 3 mJybeam⁻¹ km s⁻¹ for water in both panels and 4.3 mJy/beam km s⁻¹ for CO. The velocity intervals of the mom 0 maps are: −13.2 to 4.3 and −2.3 to t.5 km s⁻¹ for the 244.330 and 259.952 GHz absorptions; −18.8 to −3.0 km s⁻¹ for the 259.952 GHz emission of water; −2.2 to 6.0 km s⁻¹ for the CO(2−1) absorption.