Deuterium Abundance and Population-III Remnants

Details Deuterium Abundance and Population-III Remnants Deuterium Abundance and Population-III Remnants

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.215p..53r&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 215, NO.1/JUL01, P. 53P, 1985

Mathematics

Logic

15

Scientific paper

It is commonly asserted that the observed deuterium abundance precludes baryons from contributing more than ≡0.1 of the critical cosmological density. The authors tentatively suggest new grounds for remaining open-minded about this upper limit if the excess material is in the collapsed remnants of pregalactic massive stars. Primordial (deuterium-free) material accreted by these remnants may be expelled after 'processing' through kinetic temperatures 1 - 100 MeV. Lithium nuclei co-produced by high-temperature spallation are preferentially destroyed in cooler regions, where neutron capture could produce further deuterium.

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