Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Highly Ionized Neon in the Spectrum of the Sey 2 Galaxy NGC 4507 ?   Results of an ASCA X-ray observation of NGC 4507 are presented. The spectrum
is best parameterized by a double power law (or a partial covering) model plus
a narrow FeK$\alpha$ emission line likely due to the line-of-sight absorption
matter. The data require also an emission line at $\sim$ 0.9 keV consistent
with NeIX, which may indicate that the soft X-ray emission derives from a
combination of resonant scattering and fluorescence of the radiation by
photoionized gas. Moreover, complex absorption (or other, unresolved, emission
lines) is required by the data below 3 keV. Similarities between the X-ray
spectra of NGC 4507 and NGC 4151 are also stressed.

24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph