Channel maps of the ¹²CO J = 1−0 and J = 2−1 line emission toward S Cep at the LSR velocities (units of km s^-1) specified in the top-left corner of each panel. No primary beam attenuation correction is applied. (Top) CO J = 1−0: contours are plotted at 3, 6, 9, and 12σ, and from there with a spacing of 10σ, where σ = 7.9 mJy beam^-1. Equivalent negative contours are plotted in dashed lines. The last panel presents the continuum emission with a first contour and contour spacing of 3σ, where σ = 0.6 mJy beam^-1. The synthesized beam, plotted in the bottom-right corner of last panels, is 3″̣3 × 2″̣8 in size, with PA = 21°. (Bottom) CO J = 2−1: contours are plotted from and with a spacing of 6σ, where σ = 18 mJy beam^-1. In the panels marked with c in the bottom-left corner, from the contour at 24σ the spacing is 12σ. Equivalent negative contours are plotted in dashed lines. The last panel presents the continuum emission with a first contour and contour spacing of 3σ, where σ = 1.4 mJy beam^-1. The synthesized beam, plotted in the bottom-right corner of last panels, is 1″̣7 × 1″̣3 in size, with PA = 27°. The primary beams are plotted at half power in dotted lines in the last panels of the channel maps. The central coordinates are RA 21:35:12.830, Dec 78:37:28.19 (J2000).