Elemental Abundance in Stars - The Curve of Growth

  • Thread starter Daniel1992
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  • #1
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I am studying for my undergraduate Astrophysics module and the lectures notes say that that all abundances are measured relative, in terms of H = 12.00 by mass or number of atoms. Is this correct? I thought it was all based off of Carbon = 12. Am I missing something?
 

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  • #2
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The definition of amu (used for isotope masses) depends on carbon-12, maybe you mixed those two definitions?
 

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