Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolution of the near-infrared luminosity function in rich galaxy
  clusters   We present the K-band (2.2 microns) luminosity functions of the X-ray
luminous clusters MS1054-0321 (z=0.82), MS0451-0305 (z=0.55), Abell 963
(z=0.206), Abell 665 (z=0.182) and Abell 1795 (z=0.063) down to absolute
magnitudes M_K = -20. Our measurements probe fainte absolute magnitudes than do
any previous studies of the near-infrared luminosity function of clusters. All
clusters are found to have similar luminosity functions within the errors, when
the galaxy populations are evolved to redshift $z=0$. It iw known that the most
massive bound systems in the Universe at all redshifts are X-ray luminous
clusters. Therefore, assuming that the clusters in our sample correspond to a
single population seen at different redshifts, the results here imply that not
only had the stars in present-day ellipticals in rich clusters formed by z=0.8,
but that they existed in as luminous galaxies then as they do today.
  Additionally, the clusters have K-band luminosity functions which appear to
be consistent with the Kband field luminosity function in the range -24 < M_K <
-22, although the uncertainties in both the field and cluster samples are
large.

13
The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: econ
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex