Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: HST imaging of two z>4 radio galaxies   We have imaged 8C 1435+635 (z=4.25; Lacy et al. 1994; Spinrad, Dey & Graham
1995) and 6C 0140+326 (z=4.41; Rawlings et al. 1996) in both continuum and
Lyalpha plus continuum bands with the HST. Our images show patchy distributions
of continuum and line emission with a tendency for the peaks in the two types
of emission to be offset. When compared to Keck K-band images, it seems likely
that the presence of dusty neutral gas is strongly influencing the UV continuum
and Lyalpha emission. The radio and UV emission are not particularly
well-correlated, except for a general tendency towards radio-optical alignment.
It is suggested that at least some of the observed radio-optical alignment is
produced as dust is cleared from the radio lobes by shocks associated by the
radio source. If true, this means that 8C1435+635 could be hosting a luminous,
galaxy-scale starburst, as suggested by submm observations.

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The categories of this paper are: stat
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The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: math-ph
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The categories of this paper are: q-bio
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
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The categories of this paper are: adap-org
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The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int