Light element evolution resulting from WMAP data
Abstract
The recent determination of the baryon-to-photon ratio from WMAP data by Spergel et al. (2003) allows one to fix with unprecedented precision the primordial abundances of the light elements D, 3He, 4He and 7Li in the framework of the standard model of big bang nucleosynthesis. We adopt these primordial abundances and discuss the implications for Galactic chemical evolution, stellar evolution and nucleosynthesis of the light elements. The model predictions on D, 3He and 4He are in excellent agreement with the available data, while a significant depletion of 7Li in low-metallicity stars is required to reproduce the Spite plateau.
Keywords
Cite
@article{arxiv.astro-ph/0308181,
title = {Light element evolution resulting from WMAP data},
author = {Donatella Romano and Monica Tosi and Francesca Matteucci and Cristina Chiappini},
journal= {arXiv preprint arXiv:astro-ph/0308181},
year = {2009}
}
Comments
10 pages, 6 figures, accepted for publication in MNRAS. Minor changes (Figure 2: the observationally inferred range of D/H variation in the LISM has been modified - only the most reliable data are shown); some references added