Fig. 5: Depth profiles of 4He into presolar SiC grains.
From: History of individual presolar SiC grains revealed by stellar winds
a Grains with high 4He contents. A3-01a (red), A3-01b (blue), and A3-12a (green). b Grains with low 4He contents. A3-02 (red), A3-03 (blue), A3-05 (green), A3-06 (black), A3-07 (pink), A3-10 (light blue), A3-11 (yellow), and A3-12c (orange). The individual depth profiles for each grain can be found in Supplementary Figs. S2–S9. The jagged wiggles in the curves are measurement uncertainties caused by instrumental instabilities. Source data are provided as a Source Data file.
