Presolar graphite contains a 22Ne-rich component called Ne-E(L). Noble gas studies on graphite aggregates and single grains have shown that although a dominant source of the 22Ne is 22Na, 22Ne in the He-shell of asymptotic giant branch stars have also contributed to the Ne-E(L). In addition to novae that have been considered to be a possible source of 22Na, supernovae are a likely source as well. Krypton isotopic ratios of the separates indicate that part of graphite formed in low-mass (≤3 M⊙) asymptotic giant branch stars of low metallicity (Z ≤ 0.006). © Astronomical Society of Australia 2003.
CITATION STYLE
Amari, S. (2003). Presolar graphite: Noble gases and their origins. In Publications of the Astronomical Society of Australia (Vol. 20, pp. 378–381). https://doi.org/10.1071/AS03044
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