1997/09/25 by Paolo Molaro
Physics and Astronomy · #astro-ph
published as In From Quantuum fluctuations to cosmological structures, D. Valls-Gabaud, M. Hendry, P. Molaro and K. Chamcham Eds. ASP Conf. Ser. 126, p. 103 · 18 pages, 6 figures Proceedings of the first Moroccan School of Astrophysics Casablanca, Morocco, 1-10 Dec 1996
arxiv created 1997/09/25 · arxiv updated 2009/12/01
In this paper we review the present status of observations of the Big Bang elements D, 3He, 4He and 7Li and of their extrapolation to the primordial values. It is shown that, within the errors, the abundances are consistent with the predictions of the standard Big Bang nucleosynthesis for 1 < eta10 < 6, which corresponds to 0.004 < Omegab h02 < 0.02. Narrower consistencies in eta10 are still possible at about 1.7 or about 4, but in this case some of the observations of D and 4He should be incorrect. Finally, it is noted that "extragalactic" Li may have already been detected in a star possibly accreted by the Galaxy.