TY - GEN
T1 - Effects of a new 3-alpha reaction on the s-process in massive stars
AU - Kikuch, Yukihiro
AU - Ono, Masaomi
AU - Matsuo, Yasuhide
AU - Hashimoto, Masa-Aki
AU - Fujimoto, Shin Ichiro
PY - 2012/12/1
Y1 - 2012/12/1
N2 - Effect of a new 3-alpha reaction rate on the s-process during the evolution of a massive star of 25 solar mass is investigated for the first time, because the s-process in massive stars have been believed to be established with only minor change. We find that the s-process with use of the new rate during the core helium burning is very inefficient compared to the case with the previous 3-alpha rate. However, the difference of the overproduction is found to be largely compensated by the subsequent carbon burning. Since the s-process in massive stars has been attributed so far to the neutron irradiation during core helium burning, our finding reveals for the first time the importance of the carbon burning for the s-process during the evolution of massive stars.
AB - Effect of a new 3-alpha reaction rate on the s-process during the evolution of a massive star of 25 solar mass is investigated for the first time, because the s-process in massive stars have been believed to be established with only minor change. We find that the s-process with use of the new rate during the core helium burning is very inefficient compared to the case with the previous 3-alpha rate. However, the difference of the overproduction is found to be largely compensated by the subsequent carbon burning. Since the s-process in massive stars has been attributed so far to the neutron irradiation during core helium burning, our finding reveals for the first time the importance of the carbon burning for the s-process during the evolution of massive stars.
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U2 - 10.1063/1.4763428
DO - 10.1063/1.4763428
M3 - Conference contribution
AN - SCOPUS:84874545789
SN - 9780735410961
T3 - AIP Conference Proceedings
SP - 384
EP - 386
BT - Origin of Matter and Evolution of Galaxies 2011
T2 - International Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011
Y2 - 14 November 2011 through 17 November 2011
ER -