Nucleosynthesis in novea: A source of Ne-E and /sup 26/Al
Journal Article
·
· Astrophys. J.; (United States)
In the framework of recent nova models, nucleosynthetic products of explosive hydrogen burning are computed. It is shown that nova condensates are likely to contain isotopic anomalies in both /sup 22/Ne from /sup 22/Na decay and /sup 26/Mg from /sup 26/Mg from /sup 26/Al decay. In particular we find for all models considered: (1) Too much /sup 20/Ne and /sup 21/Ne is produced relative to /sup 22/Ne to explain the meteroritic Ne-E component, which presumably is almost pure /sup 22/Ne. (2) The abundance of /sup 22/Na, however, is suffieciently high to explain Ne-E as its decay product if nova condensates are preserved in Ne samples. In particular the /sup 22/Na//sup 23/Na production ratio is well above the observed limit. (3) Aluminium-26 is coproduced with /sup 22/Na, but the total amount of /sup 26/Al is strongly dependent on the very uncertain /sup 27/Si(p, ..gamma..)/sup 28/P reaction rate. (4) Further crucial reaction rates are /sup 21/Na(p, ..gamma..)/sup 22/Mg and /sup 22/Na(p, ..gamma..)/sup 23/Mg which determine the computed /sup 22/Na abundance and deserve more attention. (5) The abundances of all nuclides up to Ar are also computed and are found to be distinctly nonsolar in many cases.
- Research Organization:
- Max-Planck-Institut fuer Physik und Astrophysik, Institut fuer Astrophysik
- OSTI ID:
- 5032351
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 255:2; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALUMINIUM 26
ALUMINIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHEMICAL COMPOSITION
ERUPTIVE VARIABLE STARS
EVEN-EVEN NUCLEI
HYDROGEN BURNING
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
MAGNESIUM 26
MAGNESIUM ISOTOPES
MATHEMATICAL MODELS
MATHEMATICS
METEORITES
NEON 22
NEON ISOTOPES
NOVAE
NUCLEAR REACTIONS
NUCLEI
NUCLEOSYNTHESIS
NUMERICAL ANALYSIS
ODD-ODD NUCLEI
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SODIUM 22
SODIUM ISOTOPES
STABLE ISOTOPES
STAR BURNING
STAR MODELS
STARS
VARIABLE STARS
YEARS LIVING RADIOISOTOPES
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALUMINIUM 26
ALUMINIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHEMICAL COMPOSITION
ERUPTIVE VARIABLE STARS
EVEN-EVEN NUCLEI
HYDROGEN BURNING
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
MAGNESIUM 26
MAGNESIUM ISOTOPES
MATHEMATICAL MODELS
MATHEMATICS
METEORITES
NEON 22
NEON ISOTOPES
NOVAE
NUCLEAR REACTIONS
NUCLEI
NUCLEOSYNTHESIS
NUMERICAL ANALYSIS
ODD-ODD NUCLEI
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SODIUM 22
SODIUM ISOTOPES
STABLE ISOTOPES
STAR BURNING
STAR MODELS
STARS
VARIABLE STARS
YEARS LIVING RADIOISOTOPES