Fig. 2.
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Continuum-subtracted channel maps of W Hya obtained for the vibrationally excited H2O line (v2 = 2, JKa, Kc = 92, 8–83, 5, Eu = 6141.05 K) at 250.756830 GHz, shown in the same manner as Fig. 1. The channel maps at the velocities more redshifted than Vrel = 3.0 km s−1 are not shown, because the signals are affected by the adjacent Si17O line (v = 0, J = 6 − 5) at 250.744695 GHz.
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