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Astron. Astrophys. 347, 572-582 (1999)

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

M. Arnould, S. Goriely[FORMULA] and A. Jorissen **

Institut d'Astronomie et d'Astrophysique, Université Libre de Bruxelles, CP 226, Boulevard du Triomphe, B-1050 Bruxelles, Belgium

Received 19 January 1999 / Accepted 19 April 1999


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). 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.

Key words: nuclear reactions, nucleosynthesis, abundances

* An electronic version of this paper, with colour figures, is available at http://astro.ulb.ac.be
** Research Associate, F.N.R.S. (Belgium)

Send offprint requests to: S. Goriely

Correspondence to: sgoriely@astro.ulb.ac.be

© European Southern Observatory (ESO) 1999

Online publication: June 30, 1999