Abstract
The study of chemical element abundances in dwarf star-forming galaxies is a powerful tool for constraining the age of these low-metallicity galaxies. We find that the C/O and N/O abundance ratios in the most metal-deficient galaxies, with oxygen abundance less than Z ⊙/20, favor a very small age, not exceeding 100 Myr.
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Izotov, Y., Thuan, T.X. (1999). Heavy Element Abundances in the Most Metal-Deficient Dwarf Galaxies. In: Walsh, J.R., Rosa, M.R. (eds) Chemical Evolution from Zero to High Redshift. ESO Astrophysics Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-48360-1_33
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DOI: https://doi.org/10.1007/978-3-540-48360-1_33
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