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Fig. 4

image

Spectrum of the CN 10 emission in NGC 1614 (left), and overlay of the integrated emission on top of an HST ACS F435W filter gray-scale image (right). In the spectrum (channel width: 10 km s-1) the hyperfine-structure components of CN 10 are indicated in green. The blue line represents the convolution of the CN hyperfine structure with a Gaussian profile. This indicates that the gas traced by the CN 10 emission in NGC 1614 is optically thin. The integrated intensity map was obtained using uniform weighting. The resulting sensitivity is ~1.3 mJy beam-1, the resulting beam is depicted in the bottom right corner. The contour levels of the integrated emission start at 5σ and are spaced in steps of 5σ. The beam (see also Table 1) is depicted in the lower right corner. The cross marks the phase center. North is up, east to the left.

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