Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-02-25
Astronomy and Astrophysics
Astrophysics
46 pages, 4 figures. Accepted for publication in The Astrophysical Journal
Scientific paper
10.1086/307445
Classical novae eject significant amounts of nuclear processed material into the interstellar medium. Among the isotopes synthesized during such explosions, two radioactive nuclei deserve a particular attention: 22Na and 26Al. In this paper, we investigate the nuclear paths leading to 22Na and 26Al production during nova outbursts by means of an implicit, hydrodynamic code that follows the course of the thermonuclear runaway from the onset of accretion up to the ejection stage. New evolutionary sequences of ONe novae have been computed, using updated nuclear reaction rates relevant to 22Na and 26Al production. Special attention is focused on the role played by nuclear uncertainties within the NeNa and MgAl cycles in the synthesis of such radioactive species. From the series of hydrodynamic models, which assume upper, recommended or lower estimates of the reaction rates, we derive limits on the production of both 22Na and 26Al. We outline a list of nuclear reactions which deserve new experimental investigations in order to reduce the wide dispersion introduced by nuclear uncertainties in the 22Na and 26Al yields.
Coc Alain
Hernanz Margarita
Jose Jordi
No associations
LandOfFree
Nuclear uncertainties in the NeNa-MgAl cycles and production of 22Na and 26Al during nova outbursts does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Nuclear uncertainties in the NeNa-MgAl cycles and production of 22Na and 26Al during nova outbursts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nuclear uncertainties in the NeNa-MgAl cycles and production of 22Na and 26Al during nova outbursts will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-321593