Non-explosive hydrogen and helium burnings: Abundance predictions from the NACRE reaction rate compilation

Details Non-explosive hydrogen and helium burnings: Abundance predictions from the NACRE reaction rate compilation Non-explosive hydrogen and helium burnings: Abundance predictions from the NACRE reaction rate compilation

1999-04-29

arxiv.org/abs/astro-ph/9904407v1

Astronomy and Astrophysics

Astrophysics

13 pages, 13 figures, Latex, accepted for publication in Astronomy and Astrophysics main journal. Also available at http://a

Scientific paper

The abundances of the isotopes of the elements from C to Al produced by the non-explosive CNO, NeNa and MgAl modes of hydrogen burning, as well as by helium burning, are calculated with the thermonuclear rates recommended by the European compilation of reaction rates for astrophysics (NACRE: details about NACRE may be found at http://astro.ulb.ac.be. This electronic address provides many data of nuclear astrophysics interest and also offers the possibility of generating interactively tables of reaction rates for networks and temperature grids selected by the user). The impact of nuclear physics uncertainties on the derived abundances is discussed in the framework of a simple parametric astrophysical model. These calculations have the virtue of being a guide in the selection of the nuclear uncertainties that have to be duly analyzed in detailed model stars, particularly in order to perform meaningful confrontations between abundance observations and predictions. They are also hoped to help nuclear astrophysicists pinpointing the rate uncertainties that have to be reduced most urgently.

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