Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Galaxy activity influenced by the environment in the cluster of galaxies
  Abell 85   We analyse the relation between the dynamical state of a cluster of galaxies
and the activity (star formation and AGN) of its members. For the case of Abell
85 we find some evidence for an enhanced activity of both types in
substructures which are in the early stage of merging with the cluster.

32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex