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Fig. 1.
Comparison between the log(Ni/Fe) ratio of 2I and the values measured by Manfroid et al. (2021) for a sample of Solar System comets (Jupiter-family comets (JFC), Oort cloud comets (OCC), and Halley-type comets (HTC)). The horizontal line represents the average value for Solar System comets from Manfroid et al. (2021).
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