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Fig. 7

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HNC 1-0 spectra for Circinus, IC 860, IRAS 17208-0014 (detections), NGC 34, NGC 613, NGC 1056, NGC 1377, NGC 1614 (non-detections), NGC 4945 (detection), NGC 5135, and UGC 5101 (non-detections). For Circinus, the HC3N 10-9 line is also visible. Bandwidths for the spectra of NGC 34, NGC 613, NGC 1614, and NGC 5135 are broad enough to include non-detections of the HC3N 10-9 line, thus giving upper limits for these lines.

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