Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Atlas of Halpha and R Images and Radial Profiles of 63 Bright Virgo
  Cluster Spiral Galaxies   Narrow-band Halpha and broadband R images and radial profiles are presented
for 63 bright spiral galaxies in the Virgo Cluster. The sample is complete for
Sb-Scd galaxies with B magnitude less than 12 and inclination less than 75
degrees. Isophotal radii, disk scalelengths, concentration parameters, and
integrated fluxes are derived for the sample galaxies.

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The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
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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: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: alg-geom