Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determining rotational and macroturbulent velocities of cool magnetic
  giant stars   An original method of estimating the projected rotational velocity, $vsini$,
and the macroturbulent velocity, $v_{\rm mac}$, of evolved M giant stars is
presented. It is based on the use of spectrum synthesis and multi-line analysis
tools. The goal is to fit the mean line profile of observations with that of
synthetic spectra. The method is applied to the red giant star RZ Ari and the
results $v\sin i$ = 6.0 $\pm$ 0.5 km/s and $v_{\rm mac}$ = 2.0 $\pm$ 1.0 km/s
are obtained.

17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ