Extended Data Fig. 8: Comparison of the H, C and N isotopic composition of UCAMMs and Ryugu grains.
From: Nitrogen-rich organics from comets probed by ultra-carbonaceous Antarctic micrometeorites
(a) N and H isotopic compositions. (b) N and C isotopic compositions. UCAMMs are displayed with grey, red, blue, and green circles. Ryugu samples18 are plotted with yellow circles. The size of the circles indicates the size of the measured ROIs in UCAMMs and Ryugu grains. The bulk composition of the C-rich particles in Ryugu grains is displayed by a star. The distinct N and C isotopic compositions evidenced in UCAMMs are observed at small scale in Ryugu grains.
