On the Primordial Helium Abundance and the Δ Y/Δ O Ratio

Bibcode
2007ASPC..374...81P
Peimbert, M.; Luridiana, V.; Peimbert, A.; Carigi, L.
Bibliographical reference

From Stars to Galaxies: Building the Pieces to Build Up the Universe. ASP Conference Series, Vol. 374, proceedings of the conference held 16-20 October 2006 at Istituto Veneto di Scienze, Lettere ed Arti, Venice, Italy. Edited by Antonella Vallenari, Rosaria Tantalo, Laura Portinari, and Alessia Moretti., p.81

Advertised on:
12
2007
Number of authors
4
IAC number of authors
0
Citations
40
Refereed citations
35
Description
We present a review on the determination of the primordial helium abundance, Y_p, 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 Δ Y/Δ O , and compare them with predictions based on models of galactic chemical evolution.
Type
Non-refereed

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