Some remarks on the primordial Li-7
Abstract
Some implications of recent determinations of the Li abundance at the surface of a few halo stars for cosmology and the chemical evolution of galaxies are discussed. The most important feature of these recent studies is the fact that the halo dwarfs have the same Li/H abundance of about 10 to the -10th over an effective temperature range where the disk dwarf stars suffer different depletion effects of a factor of about ten between the hottest and coldest stars. A possible result of the observations, if confirmed, is that the nucleon contribution to the overall density is quite small. A possible explanation which does not require modification of existing ideas of primordial nucleosynthesis and the chemical evolution of the Galaxy is also suggested.
- Publication:
-
The Birth of the Universe
- Pub Date:
- 1982
- Bibcode:
- 1982botu.conf..155A
- Keywords:
-
- Cosmology;
- Dwarf Stars;
- Galactic Evolution;
- Lithium Isotopes;
- Abundance;
- Chemical Reactions;
- Nuclear Fusion;
- Stellar Structure;
- Astrophysics