Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Host galaxies of AGN   The relationship of an AGN to its host galaxy is a crucial question in the
study of galaxy evolution. We perform stellar population synthesis in the
central regions of galaxies of different activity levels. A large number of
stellar features are measured both in the optical and near-infrared. We find
the nuclear stellar population to be related to the level of activity. These
differences are no more conspicuous further away in the bulge of the galaxy.

35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th