Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multicolour Optical Surface Brightness Profiles Decomposition of the
  Seyfert Galaxies III Zw 2, Mrk 506 and Mrk 509   We present the results of the UBVRcIc surface brightness profiles
decomposition of the Seyfert galaxies III Zw 2, Mrk 506 and Mrk 509. The
profiles were modelled as a sum of a Gaussian, a Sersic law and an exponent. A
Ferrers bar and a Gaussian ring were added to the model profiles of III Zw 2
and Mrk 506, respectively. The parameters and the total magnitudes of the
structural components were derived.

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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con
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The categories of this paper are: econ
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: cmp-lg
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The categories of this paper are: plasm-ph
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The categories of this paper are: eess