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Fig. 4

image

SD observations towards R Scl (from left to right): SEST CO(1–0), IRAM 30 m CO(1–0), APEX CO(2–1), and APEX CO(3–2). The FWHM of the SD beams are 44′′, 22′′, 27′′, and 18′′, respectively. The red spectra show the ALMA observations of the respective transitions convolved with Gaussian beams to give the FWHM from the respective telescopes.

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