Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some clues on the tilt of the Horizontal Branches in metal-rich clusters   We discuss some clues on the large tilt observed in the Horizontal Branch of
the metal-rich galactic globular clusters NGC 6388 and NGC 6441. This not yet
understood feature is investigated from theoretical and observational sides.

5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
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The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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The categories of this paper are: econ
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The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
26
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: hep-ex
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The categories of this paper are: acc-phys