Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: H-band observations of the Chandra Deep Field South   We report preliminary results of our H-band survey of the Chandra Deep Field
South (CDFS). The observations were made using SofI on the NTT, and cover 0.027
square degrees with a 50% completeness limit of H = 20.5, and 0.17 square
degrees with a 50% completeness limit of H =19.8. We used SExtractor to extract
sources from our fields. In total we have detected 4819 objects. Star-galaxy
separation was performed using the SExtractor parameter ``stellarity index''.
All objects with an index of 0.5 or lower were classified as galaxies.
According to this criterion, 80 % of our detections are galaxies. We then
compare our results with previous observations of the CDFS. Our astrometric
solutions are in good agreement with the Las Campanas Infrared Survey (LCIRS),
the COMBO-17 and the ESO-EIS surveys. The photometry of our catalog compares
satisfactorily with the results of the LCIRS, as well as with the GOODS data.
Galaxy number counts are presented and compared with the LCIRS results. The
present data are intended to complement the recent and future multi-wavelenghth
observations of the CDFS and will be used, in conjuction with additional
multiband photometry, to find counterparts of the upcoming mid-infrared surveys
with SIRTF.

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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: math
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The categories of this paper are: mtrl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph