This article has an erratum: [https://doi.org/10.1051/0004-6361/201732216e]
Total intensity (zeroth moment) maps for some bright lines in IK Tau. For all lines, except NaCl(26–25), the line contours are given, each step being 10% of the peak flux density. For NaCl(26–25), we demonstrate the arcs offset from the stellar position by showing in dotted black line the dust continuum contours at 1%, 10%, and 90% of the peak continuum emission. The contrast in the figure is best visible on screen.
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