Inverse Kinematic Study of theAl26g(d,p)Al27Reaction and Implications for Destruction ofAl26in Wolf-Rayet and Asymptotic Giant Branch Stars

Autor:	Jennifer Fallis, Philip Woods, J. A. Tostevin, A. Rojas, G. Christian, Barry Davids, D. T. Doherty, Gavin Lotay, Chris Ruiz, V. Margerin, Thomas Davinson, D. Howell, D. J. Mountford, Marialuisa Aliotta, Oliver S. Kirsebom
Rok vydání:	2015
Předmět:	Physics Reaction rate Stars Wolf–Rayet star Hydrogen chemistry General Physics and Astronomy Resonance chemistry.chemical_element Asymptotic giant branch Emission spectrum Astrophysics Atmospheric temperature range
Zdroj:	Physical Review Letters. 115
ISSN:	1079-7114 0031-9007
Popis:	In Wolf-Rayet and asymptotic giant branch (AGB) stars, the (26g)Al(p,γ)(27)Si reaction is expected to govern the destruction of the cosmic γ-ray emitting nucleus (26)Al. The rate of this reaction, however, is highly uncertain due to the unknown properties of key resonances in the temperature regime of hydrogen burning. We present a high-resolution inverse kinematic study of the (26g)Al(d,p)(27)Al reaction as a method for constraining the strengths of key astrophysical resonances in the (26g)Al(p,γ)(27)Si reaction. In particular, the results indicate that the resonance at E(r)=127 keV in (27)Si determines the entire (26g)Al(p,γ)(27)Si reaction rate over almost the complete temperature range of Wolf-Rayet stars and AGB stars.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::23dfd52f7c1050edb0fedf0a7926b267 https://doi.org/10.1103/physrevlett.115.062701 Zobrazit plný text záznamu