Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Counts, Sizes and Colors of Faint Infrared Selected Galaxies   Deep J and Ks band images covering a $5\times5$ arcmin area centered on the
NTT Deep Field have been obtained during the Science Verification of SOFI at
the NTT. These images were made available via the Web in early June. The
preliminary results we have obtained by the analysis of these data are the
following: 1) the counts continue to rise with no evidence of a turnover or of
a flattening down to the limits of the survey (Ks=22.5 and J=24); 2) we find a
slope $dlog(N)/dm\sim$0.37 in agreement with most of the faintest surveys but
much steeper than the Hawaii survey; 3) fainter than Ks$\sim19$ and J$\sim20$,
the median J-K color of galaxies shows a break in its reddening trend turning
toward bluer colors; 4) faint bluer galaxies also display a larger compactness
index, and a smaller apparent size.

18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg