Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chemical composition of giants from two moving groups   We present stellar parameters of 19 K-type giants and their abundances of 13
chemical elements (Al, Ba, Ca, Fe, K, Mg, Mn, Na, Ni, Sc, Si, Ti and V),
selected from two moving groups, covering the metallicity range of -0.6 <
[Fe/H] < 0.2, based on high resolution spectra. Most elemental abundances show
similar trends with previous studies except for Al, Na and Ba, which are
affected by evolution seriously. The abundance ratios of [Na/Mg] increase
smoothly with higher [Mg/H] and [Al/Mg] decrease slightly with increasing
[Mg/H]. [Mg/Ba] show distinction between these two moving groups which is
mainly induced by chemical evolution and partly by kinematic effects. The
inhomogeneous metallicity of each star from the moving groups demonstrate that
these stars have different chemical origins before they were kinematically
aggregated and favor the dynamical resonant theory.

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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
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The categories of this paper are: q-bio
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The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
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The categories of this paper are: plasm-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-th