Fig. 6.
14N/15N values obtained in the sample presented in this paper and re-computed for L1544 with errorbars, determined with the method described in the main text. Red points refer to measurements of N15NH+, while blue ones of 15NNH+. The solid line represents the average value found in the whole sample (=770), while the dashed curve is the proto-solar nebula value (440).
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