The Rare Earth Peak : An Overlooked r-Process Diagnostic

Details The Rare Earth Peak : An Overlooked r-Process Diagnostic The Rare Earth Peak : An Overlooked r-Process Diagnostic

2012-02-08

arxiv.org/abs/1202.1758v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

12 pages, 6 figures, submitted to ApJ

Scientific paper

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>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.

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