Abundance characteristic and synthesis scenario of the galactic chemical elements. (I): Light element abundances characteristic in the interstellar medium.

Details Abundance characteristic and synthesis scenario of the galactic chemical elements. (I): Light element abundances characteristic in the interstellar medium. Abundance characteristic and synthesis scenario of the galactic chemical elements. (I): Light element abundances characteristic in the interstellar medium.

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997pabei..15..352h&link_type=abstract

Prog. Astron., Vol. 15, No. 4, p. 352 - 363

Astronomy and Astrophysics

Astronomy

Interstellar Matter: Element Abundances, Galaxy: Element Abundances

Scientific paper

The most recent observational data of the light element abundances in the interstellar medium (ISM) and their interpretations are presented. The abundance of light elements in the ISM serves as a sensitive diagnostic of the Standard Big Bang Nucleosynthesis (SBBN). Recent observations have suggested possible variations of D/H ratios in the local ISM. While the observed results of the deuterium abundance from high redshift absorbers towards quasars show large differences between various measurements, which cannot be properly understood under the framework of current SBBN and galactic chemical evolution theory if the observations are reliable. Evidences also show that the solar system abundances may not be strictly representative of the local ISM 4.5 Gyr ago.

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