Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: X-ray Spectroscopy of Cool Stars   High-resolution X-ray spectroscopy has addressed not only various topics in
coronal physics of stars, but has also uncovered important features relevant
for our understanding of stellar evolution and the stellar environment. I
summarize recent progress in coronal X-ray spectroscopy and in particular also
discuss new results from studies of X-rays from pre-main sequence stars.

1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ