MESA isochrones on CMD for different metallicity: Fe/H = 0, −1, −2, −4. Age is 10 Gyr. Only main sequence and red giant branch are shown.
<a href="//commons.wikimedia.org/wiki/User:Vallastro" title="User:Vallastro">Vallastro</a>
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<span class="int-own-work" lang="en">Own work</span>