
TY  - JOUR
A1  - Amari, Sachiko 
T1  - Presolar Graphite: Noble Gases and their Origins
JF  - Publications of the Astronomical Society of Australia
JO  - Publ. Astron. Soc.  Aust.
Y1  - 2003
VL  - 20
IS  - 4
SP  - 378
EP  - 381
KW  - meteorites &#8212; presolar grains &#8212; Ne-E(L) &#8212; isotopic anomalies &#8212; nucleosynthesis
UR  - https://doi.org/10.1071/AS03044 
N2  - 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 (&#8804;3 M&odot;) asymptotic giant branch stars of low metallicity (Z &#8804; 0.006). 
ER  -

