Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nuclear Brightness Profiles of Merger Remnants: Constraints on the
  Formation of Ellipticals by Mergers   We present preliminary results of an HST/NICMOS program to image merger
remnants in the J, H and K bands. The nuclear brightness profiles for most
sample galaxies are similar to those typical for elliptical galaxies, but some
(including the well-studied NGC 3921 and 7252) have an unusually high
luminosity density at small radii. This is consistent with the prediction of
N-body simulations that gas flows to the center during a merger and forms new
stars.

4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn