Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evidence for merging or disruption of red galaxies from the evolution of
  their clustering   The formation and evolution of massive red galaxies form a crucial test of
theories of galaxy formation based on hierarchical assembly. In this letter we
use observations of the clustering of luminous red galaxies from the Bootes
field and N-body simulations to argue that about 1/3 of the most luminous
satellite galaxies appear to undergo merging or disruption within massive halos
between z~0.9 and z~0.5.

27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph