The effect of 12C+12C rate uncertainties on s-process yields

被引：10

作者：

Bennett, M. E. ^{[1
]}

Hirschi, R. ^{[1
,2
]}

Pignatari, M. ^{[3
,4
,7
]}

Diehl, S. ^{[5
]}

Fryer, C. ^{[6
]}

Herwig, F. ^{[7
]}

Hungerford, A. ^{[6
]}

Magkotsios, G. ^{[3
,8
]}

Rockefeller, G. ^{[6
]}

Timmes, F. ^{[8
]}

Wiescher, M. ^{[3
]}

Young, P. ^{[8
]}

机构：

[1] Univ Keele, Astrophys Grp, Keele ST5 5BG, Staffs, England

[2] Univ Tokyo, IPMU, Chiba 2778582, Japan

[3] Univ Notre Dame, Joint Nucl Inst Astrophys, Notre Dame, IN 46556 USA

[4] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada

[5] Los Alamos Natl Lab, Theoret Astrophys Grp, Los Alamos, NM 87544 USA

[6] Los Alamos Natl Lab, Phys Method CCS2, Computat, Los Alamos, NM 87544 USA

[7] Univ Victoria, Dept Phys & Astron, POB 3055, Victoria, BC V8W 3P6, Canada

[8] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA

来源：

NUCLEAR PHYSICS IN ASTROPHYSICS IV (NPAIV 2009) | 2010年 / 202卷

基金：

美国国家科学基金会;

关键词：

PROCESS NUCLEOSYNTHESIS; MASSIVE STARS; WEAK COMPONENT; EVOLUTION;

D O I：

10.1088/1742-6596/202/1/012023

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The slow neutron capture process in massive stars (the weak s-process) produces most of the s-only isotopes in the mass region 60 < A < 90. The nuclear reaction rates used in simulations of this process have a profound effect on the final s-process yields. We generated 1D stellar models of a 25 M-circle dot star varying the C-12 + C-12 rate by a factor of 10 and calculated full nucleosynthesis using the post-processing code PPN. Increasing or decreasing the rate by a factor of 10 affects the convective history and nucleosynthesis, and consequently the final yields.

引用

页数：4

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