Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The galaxy luminosity function in the cluster of galaxies Abell 496   We have derived the galaxy luminosity function (GLF) in the cluster of
galaxies Abell 496 from a wide field image in the I band. A single Schechter
function reproduces quite well the GLF in the 17 <= I_{AB} <= 22 (-19.5 <= M_I
<= -14.5) magnitude interval, and the power law index of this function is found
to be somewhat steeper in the outer regions than in the inner regions. This
result agrees with the idea that faint galaxies are more abundant in the outer
regions of clusters, while in the denser inner regions they have partly been
accreted by larger galaxies or have been dimmed or even disrupted by tidal
interactions.

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The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
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The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys