Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (116) (Citation History)
· Refereed Citations to the Article
· Reads History
·
· Translate This Page
Title:
Neutron capture nucleosynthesis during core helium burning in massive stars
Authors:
Prantzos, N.; Arnould, M.; Arcoragi, J.-P.
Affiliation:
AA(CEA, Service d'Astrophysique, Gif-sur-Yvette, France), AB(Bruxelles, Universite Libre, Brussels, Belgium), AC(Bruxelles, Universite Libre, Brussels, Belgium)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 315, April 1, 1987, p. 209-228. (ApJ Homepage)
Publication Date:
04/1987
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Abundance, Helium, Nuclear Fusion, Stellar Cores, Wolf-Rayet Stars, Differential Equations, Numerical Analysis, Solar System, Stellar Models, Stellar Winds
DOI:
10.1086/165125
Bibliographic Code:
1987ApJ...315..209P

Abstract

Neutron-capture nucleosynthesis during core He burning in massive (ZAMS mass = 50-100 solar mass) mass-losing stars, which are identified with Wolf-Rayet stars, is studied in the framework of recent stellar models based on the Roxburgh criterion for convection and on the latest nuclear data available. The nucleosynthesis is followed with the aid of a full nuclear reaction network incorporating up-to-date Maxwellian-averaged neutron-capture cross sections and new density- and temperature-dependent beta-decay rates. Numerical techniques are developed in order to integrate efficiently the set of coupled differential equations of the network. The resulting stellar core and surface abundances are presented, as well as the composition of the stellar winds ejected during the WC phase. Consideration is given to the implications of these results for the composition of OB associations and of the solar system, for the isotopic anomalies in meteorites and in the galactic cosmic rays, as well as for nuclear gamma-ray line astronomy.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints