1997/04/09 by D. Gautier, P. Morel, Gautier, D. +1 · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Astro and Planetary Science #Astrophysics (astro-ph) #FOS: Physical sciences #Geology and Paleoclimatology Research #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9704069
4 pages, 3 figures in PostScript, Latex file, uses l-aa.sty, accepted for publication in A&Al, available at http://www.obs-nice.fr/morel/articles.html
arxiv created 1997/04/09 · openalex publication_date 1997/04/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We reanalyze the inference of the protosolar abundance of deuterium made by Geiss (1993) from measurements of 3He/4He in the solar wind. We use an evolutionary solar model with microscopic diffusion, constrained to fit the present age, radius and luminosity, as well as the observed ratio of heavy elements to hydrogen. The protosolar 2H/1H is obtained from the best fit of 3He/4He in the solar wind. Taking for the protosolar 3He/4He the value measured in Jupiter by the Galileo probe (Niemann et al. 1996), we derive the protosolar 2H/1H=(3.01 +- 0.17) 10-5 ratio. Compared to the present interstellar medium value (Linsky et al. 1993), this result is compatible with models of the chemical evolution of the Galaxy in the solar neighborhood; it is also marginally compatible with the Jovian 2H/1H=(5 +- 2) 10-5 ratio measured by Galileo.