Fig. 3: Variation of Xe isotope ratios during stepped combustion of C0209 and C0208 (for 129Xe/132Xe only).
From: A primordial noble gas component discovered in the Ryugu asteroid and its implications
The dashed lines for C0209 define the average ratios calculated for the range of Xe release where the ratios show no significant variations (Source data are provided in Supplementary Table S4). The values for the average ratios are shown next to the lines. The errors are calculated as the standard error of the means. After more than 85–95% of Xe is released, the isotope ratios move towards planetary (Xe-P14) and presolar nanodiamonds Xe-HL28. The 129Xe/132Xe ratio variations for C0208 with “normal” Xe concentration are shown for comparison. The dashed line, in this case, corresponds to the bulk value, which is indistinguishable from Xe-P1 within the error bars (1σ).
