There is the "classical" nucleosynthesis timeline chart where the $\log ({\rm mass \,fraction})$ is plotted as a function of $\log(t)$ where $t$ is in seconds after the big bang, looking e.g. as follows

Nucleosynthesis chart


I am searching for the same chart reaching out a bit further towards 17 on the $x$-axis (which would be right now) and I am wondering whether such a thing exists (and what would be the appropriate search terms for a knowledge database).


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    $\begingroup$ I can envisage what you mean but I don't believe I've ever seen one. A problem would be that these are universal abundances, but the enrichments that are calculated later due to stars will enrich their local environments so you would have to apply some sort of dilution factor to correct some sort of average galactic chemical evolution model. $\endgroup$
    – ProfRob
    Commented Apr 15, 2021 at 7:20
  • $\begingroup$ @ProfRob I would already be happy with some local curves without the dilution. $\endgroup$
    – B--rian
    Commented Apr 15, 2021 at 8:35
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    $\begingroup$ But then it will be unrelated to nucleisynthesus. Basically you are looking for an averaged distribution of the elements in the Universe, isn't it? $\endgroup$
    – Alchimista
    Commented Apr 17, 2021 at 11:04


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