Presupernova Collapse Models with Improved Weak-Interaction Rates
Journal Article
·
· Physical Review Letters
Improved values for stellar weak-interaction rates have been recently calculated based upon a large shell-model diagonalization. Using these new rates (for both beta decay and electron capture), we have examined the presupernova evolution of massive stars in the range (15--40)M{sub 0} . Comparing our new models with a standard set of presupernova models by Woosley and Weaver, we find significantly larger values for the electron-to-baryon ratio at the onset of collapse and smaller iron core masses. These changes may have important consequences for nucleosynthesis and the supernova explosion mechanism.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40205837
- Journal Information:
- Physical Review Letters, Vol. 86, Issue 9; Other Information: DOI: 10.1103/PhysRevLett.86.1678; Othernumber: PRLTAO000086000009001678000001; 004109PRL; PBD: 26 Feb 2001; ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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