Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A New Technique for Determining Europium Abundances in Solar-Metallicity
  Stars   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.

31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an