An upper limit to the deuterium abundance in a few halo dwarfs

Details An upper limit to the deuterium abundance in a few halo dwarfs An upper limit to the deuterium abundance in a few halo dwarfs

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...128..252s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 128, no. 1, Nov. 1983, p. 252-254.

Astronomy and Astrophysics

Astrophysics

5

Big Bang Cosmology, Deuterium, Dwarf Stars, Stellar Evolution, H Alpha Line, Stellar Spectra

Scientific paper

A few metal-poor dwarfs have been observed at the CFH telescope. Their spectra do not show the deuterium absorption line. The upper limit of the possible abundance of deuterium is ND/NH = 10-5, significantly lower than the abundance expected from the hot Big Bang. The deuterium has probably been completely destroyed because of convection in these stars.

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