Channel maps of the ¹³CO J = 3−2 line emission toward M 2–9. The center is given by the position of the compact continuum emission, here subtracted, at J2000 coordinates RA = 17:05:37.966, Dec = −10:08:32.63. The LSR velocities are specified in the top left corner of each panel. Contours are shown in 4 ×σ with a spacing of 7 ×σ (where the root-mean-square noise is 2.5 mJy beam^-1, which corresponds to 0.82 K in Rayleigh-Jeans-equivalent T_MB units) as a white solid line, and at −4 ×σ as dashed red lines. The synthesized beam is 0.̋20 × 0.̋17 with the major axis PA = −79° and is drawn in the bottom right corner of the last panel.