English

A New Technique for Determining Europium Abundances in Solar-Metallicity Stars

Solar and Stellar Astrophysics 2015-05-13 v2 Instrumentation and Methods for Astrophysics

Abstract

We present a new technique for measuring the abundance of europium, a representative r-process element, in solar-metallicity stars. Our algorithm compares LTE synthetic spectra with high-resolution observational spectra using a chi-square-minimization routine. The analysis is fully automated, and therefore allows consistent measurement of blended lines even across very large stellar samples. We compare our results with literature europium abundance measurements and find them to be consistent; we also find our method generates smaller errors.

Keywords

Cite

@article{arxiv.0905.4731,
  title  = {A New Technique for Determining Europium Abundances in Solar-Metallicity Stars},
  author = {Kathryn M. G. Peek},
  journal= {arXiv preprint arXiv:0905.4731},
  year   = {2015}
}

Comments

10 pages, 7 figures