THE RARE EARTH PEAK: AN OVERLOOKED r-PROCESS DIAGNOSTIC

被引：33

作者：

Mumpower, Matthew R. ^{[1
]}

McLaughlin, G. C. ^{[1
]}

Surman, Rebecca ^{[2
]}

机构：

[1] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

[2] Union Coll, Dept Phys & Astron, Schenectady, NY 12308 USA

来源：

ASTROPHYSICAL JOURNAL | 2012年 / 752卷 / 02期

关键词：

nuclear reactions; nucleosynthesis; abundances; NEUTRON STAR WINDS; PROCESS NUCLEOSYNTHESIS; NUCLEAR-PHYSICS; REACTION-RATES; METAL-POOR; CAPTURE; RICH; ELEMENTS; DECOMPRESSION; MATTER;

D O I：

10.1088/0004-637X/752/2/117

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The astrophysical site or sites responsible for the r-process of nucleosynthesis still remains an enigma. Since the rare earth region is formed in the latter stages of the r-process, it provides a unique probe of the astrophysical conditions during which the r-process takes place. We use features of a successful rare earth region in the context of a high-entropy r-process (S greater than or similar to 100k(B)) and discuss the types of astrophysical conditions that produce abundance patterns that best match meteoritic and observational data. Despite uncertainties in nuclear physics input, this method effectively constrains astrophysical conditions.

引用

页数：10

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