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| Paper: |
On the Primordial Helium Abundance and the ΔY/ΔO Ratio |
| Volume: |
374, From Stars to Galaxies: Building the Pieces to Build Up the Universe |
| Page: |
81 |
| Authors: |
Peimbert, M.; Luridiana, V.; Peimbert, A.; Carigi, L. |
| Abstract: |
We present a review on the determination of the primordial helium abundance, Yp, based on the study of hydrogen and helium recombination lines in extragalactic H ii regions. We also discuss the observational determinations of the increase of helium to the increase of oxygen by mass ΔY/ΔO, and compare them with predictions based on models of galactic chemical evolution. |
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