Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Abundances of metals in five nearby open clusters   Abundances of Mg, Ca, Sc, Cr, Fe, and Ni are derived for A stars of five
nearby open clusters of various ages using high resolution spectroscopy. We
point out a correlation between the abundance of Ca and that of Sc, suggesting
that the abundance anomalies of these elements arise from the same physical
process. Pronounced Am patterns are rather found in the oldest cluster stars
whereas younger targets show weaker Am anomalies and atypical patterns for some
of them.

2
The categories of this paper are: math
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph