Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Ital-FLAMES survey of the Sagittarius dwarf Spheroidal galaxy. I.
  Chemical abundances of bright RGB stars   We present iron and $\alpha$ element (Mg, Ca, Ti) abundances for a sample of
15 Red Giant Branch stars belonging to the main body of the Sagittarius dwarf
Spheroidal galaxy. Abundances have been obtained from spectra collected using
the high resolution spectrograph FLAMES-UVES mounted at the VLT. Stars of our
sample have a mean metallicity of [Fe/H]=-0.41$\pm$0.20 with a metal poor tail
extending to [Fe/H]=-1.52. The $\alpha$ element abundance ratios are slightly
subsolar for metallicities higher than [Fe/H]\gtsima-1, suggesting a slow star
formation rate. The [$\alpha$/Fe] of stars having [Fe/H]$<$-1 are compatible to
what observed in Milky Way stars of comparable metallicity.

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The categories of this paper are: econ
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
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The categories of this paper are: cmp-lg
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The categories of this paper are: math
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The categories of this paper are: physics