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Astrophysics of Galaxies
Solar and Stellar Astrophysics
The abundances of carbon, nitrogen, oxygen and 12C/13C in the star HD 140283
12C/13C ratio and CNO abundances in the classical very old metal-poor dwarf HD 140283
These abundances suggest that the effect of super-asymptotic giant branch stars or fast-rotating massive stars was significant in the early galaxy.
M. Spite, F. Spite, B. Barbuy
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