Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Globular cluster system erosion and nucleus formation in elliptical
  galaxies   The radial distribution of globular clusters in galaxies is always less
peaked to the centre than the halo stars'. Extending previous work to a sample
of HST globular cluster systems in ellipticals, we evaluate the number of
clusters lost to the galactic centre as the integrals of the difference between
the observed globular cluster system distribution and the underlying halo light
profile.
  It results that the initial populations of globular clusters were from 25% to
50% richer than now.
  This significant number of missing globular clusters supports the hypothesis
that a large quantity of globular cluster mass in form of globular clusters
decayed and destroyed has been lost to the galactic centres, where plausibly
contributed to formation and feeding of a mas sive object therein.
  It is relevant noting that the observed correlation between the core radius
of the globular cluster system and the parent galaxy luminosity can be
interpreted as a result of evolution.

20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex