Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The AMBRE project: Iron-peak elements in the solar neighbourhood   The aim of this paper is to characterise the abundance patterns of five
iron-peak elements (Mn, Fe, Ni, Cu, and Zn) for which the stellar origin and
chemical evolution are still debated. We automatically derived iron peak (Mn,
Fe, Ni, Cu, and Zn) and alpha element (Mg) chemical abundances for 4666 stars.
We used the bimodal distribution of [Mg/Fe] to chemically classify sample stars
into different Galactic substructures: thin disc, metal-poor and high-alpha
metal rich, high-alpha and low-alpha metal-poor populations. High-alpha and
low-alpha metal-poor populations are fully distinct in Mg, Cu, and Zn. Thin
disc trends of [Ni/Fe] and [Cu/Fe] are very similar and show a small increase
at supersolar metallicities. Thin and thick disc trends of Ni and Cu are very
similar and indistinguishable. Mn looks different from Ni and Cu. [Mn/Fe]
trends of thin and thick discs actually have noticeable differences: the thin
disc is slightly Mn richer than the thick disc. [Zn/Fe] trends look very
similar to those of [alpha/Fe] trends. The dispersion of results in both discs
is low (approx 0.05 dex for [Mg, Mn, and Cu/Fe]) and is even much lower for
[Ni/Fe] (approx 0.035 dex). Zn is an alpha-like element and could be used to
separate thin and thick disc stars. [Mn/Mg] ratio could also be a very good
tool for tagging Galactic substructures. Some models can partially reproduce
the observed Mg, Zn, and, Cu behaviours. Models mostly fail to reproduce Mn and
Ni in all metallicity domains, however, models adopting yields normalised from
solar chemical properties reproduce Mn and Ni better, suggesting that there is
still a lack of realistic theoretical yields of some iron-peak elements. Very
low scatter (approx 0.05 dex) in thin and thick disc sequences could provide an
observational constrain for Galactic evolutionary models that study the
efficiency of stellar radial migration.

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The categories of this paper are: cs
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The categories of this paper are: ao-sci
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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: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: physics
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
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The categories of this paper are: math
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The categories of this paper are: plasm-ph
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The categories of this paper are: nlin
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The categories of this paper are: cond-mat