Phylogenetic trees present a way of analyzing evolutionary histories when there is heritability between generations. Since chemical abundances are transferred from one generation of stars to the next one, there is heritability in the chemical evolution of galaxies. In this work we built phylogenetic trees of a CIELO simulated disk galaxy, using chemical abundances of 9 elements. We investigated how phylogenetic trees from different regions of a galaxy compare to each other, which we found is directly related to the age-metallicity relation and star formation history of the galaxy. Since using simulated data we could relate properties of phylogenetic trees with the global chemical evolution of the galaxy, we applied the method to data from the halo of the Milky Way. Using chemical abundances derived from owned spectra, we aim to build phylogenetic trees of stars from different building blocks of the Milky Way. In this talk I will discuss our findings related to age-metallicity relation and star formation history of a Milky Way building block as seen by phylogenetic trees.
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