H/C elemental ratio of the refractory organic matter in cometary particles of 67P/Churyumov-Gerasimenko

Rosetta mission full comet phase results

Open Access

Fig. 2

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Mass spectra of the cometary particle Fred and the related target in both positive (top panel) and negative (bottom panel) ionization registration modes. The intensity is normalized to the Si(CH₃) and CH₃SiO fragments in each panel.

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