Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pushing Automated Abundance Derivations Into the Cool Star Regime: A
  Test Using Three G and Two K Stars in Praesepe   We present the results of an abundance analysis of three G and two K dwarfs
in the Praesepe open cluster based on high-resolution, moderate
signal-to-noise-ratio spectra obtained with the ARC 3.5-m Telescope at Apache
Point Observatory. Using a Principle Component Analysis and the BACCHUS
automated spectral analysis code, we determined stellar parameters and
abundances of up to 24 elements for each of our targets, which range in
temperature from 6000 to 4600 K. The average derived iron abundance for the
three G stars is 0.17+/-0.07 dex, consistent with the 0.12+/-0.04 dex derived
by Boesgaard et al. (2013) for their sample of 11 solar-type Praesepe members,
which included these G stars. To investigate the efficacy of using automated
routines to derive the abundances of cooler main-sequence stars, we compared
the abundances of the K dwarfs to those of the G dwarfs. Our abundances are
consistent to <=0.1~dex for 13 of the 18 elements we report for all five of the
stars, providing more evidence that G and K stars in a given open cluster are
chemically homogeneous. The median difference between the mean G and K stars
abundances is 0.08+/-0.05 dex, despite serious challenges with the noisier data
for the fainter K dwarfs. Our results are encouraging for chemical tagging, as
they indicate that it may be possible to use automated abundance determination
techniques to identify chemically related main-sequence stars across larger
temperature ranges than are usually considered in these experiments.

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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: ao-sci
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: math
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
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The categories of this paper are: q-bio
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The categories of this paper are: nlin