Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Submillimetre Observations of z>6 Quasars   We report on submillimetre observations of three high redshift (z>6) quasars,
made using the SCUBA camera on the JCMT. Only one of the sample was detected at
850um-- SDSS J1148+5251 (z=6.43). It was also detected (>3 sigma significance)
at 450um, one of the few z>4 quasars for which this is the case. In combination
with existing millimetric data, the submm detections allow us to place limits
on the temperature of the submm-emitting dust, hence on the mass of dust to be
synthesized under the time constraint imposed by the quasar's redshift.

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The categories of this paper are: cond-mat
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The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics