Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Super-massive stars: Dense star-gas systems   We use a gaseous model and a semi-analytical approach to study the evolution
of a super-massive central gaseous object (a super-massive star, (SMS from now
on) in an AGN and its evolution by interactions with the surrounding stellar
system. Our future work in this field is outlined, which aims at a more
detailed study of energy flows in the interstellar medium, stellar evolution
and the relation between QSOs and galaxy formation.

5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph