The puzzling origin of the 6Li plateau
Astrophysics
2011-11-10 v2
Abstract
We discuss the 6Li abundance evolution within a hierarchical model of Galaxy formation which correctly reproduces the [Fe/H] distribution of metal-poor halo stars. Contrary to previous findings, we find that neither the level (6Li/H=6x10^-12) nor the flatness of the 6Li distribution with [Fe/H] can be reproduced under the most favourable conditions by any model in which 6Li production is tied to a (data-constrained) Galactic star formation rate via cosmic ray spallation. Thus, the origin of the plateau might be due to some other early mechanism unrelated to star formation.
Keywords
Cite
@article{arxiv.0806.4184,
title = {The puzzling origin of the 6Li plateau},
author = {Carmelo Evoli and Stefania Salvadori and Andrea Ferrara},
journal= {arXiv preprint arXiv:0806.4184},
year = {2011}
}
Comments
6 pages, 3 figures, accepted for publication in MNRAS Letters