Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Metal Abundances and Kinematics of Bright Metal-Poor Giants Selected
  from the LSE Survey: Implications for the Metal-Weak Thick Disk   We report medium-resolution (1-2 A) spectroscopy and broadband (UBV)
photometry for a sample of 39 bright stars (the majority of which are likely to
be giants) selected as metal-deficient candidates from an objective-prism
survey concentrating on Galactic latitudes below |b| = 30 deg, the LSE survey
of Drilling & Bergeron. Although the primary purpose of the LSE survey was to
select OB stars (hence the concentration on low latitudes), the small number of
bright metal-deficient giant candidates noted during this survey provide
interesting information on the metal-weak thick disk (MWTD) population.
  The kinematics of the LSE giants indicate the presence of a rapidly rotating
population, even at quite low metallicity. We consider the distribution of
orbital eccentricity of the LSE giants as a function of [Fe/H], and conclude
that the local fraction (i.e., within 1 kpc from the Sun) of metal-poor stars
that might be associated with the MWTD is on the order of 30%-40% at abundances
below [Fe/H] = -1.0. Contrary to recent analyses of previous (much larger)
samples of non-kinematically selected metal-poor stars, we find that this
relatively high fraction of local metal-poor stars associated with the MWTD may
extend to metallicities below [Fe/H] = -1.6, much lower than had been
considered before. We identify a subsample of 11 LSE stars that are very likely
to be members of the MWTD, based on their derived kinematics; the lowest
metallicity among these stars is [Fe/H] = -2.35. Implications of these results
for the origin of the MWTD and for the formation of the Galaxy are considered.
(abridged)

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The categories of this paper are: eess
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-th
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The categories of this paper are: physics
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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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: q-fin
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The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: stat
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The categories of this paper are: alg-geom
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The categories of this paper are: cs