Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: V and R-band Galaxy Luminosity Functions and Low Surface Brightness
  Galaxies in the Century Survey   We use 64 square degrees of deep V and R CCD images to measure the local V
and R band luminosity function of galaxies. The V_0<16.7 and R_0<16.2 redshift
samples contain 1250 galaxies and are 98% complete. We apply k-corrections
before the magnitude selection so that the completeness is to the same depth
for all spectral types. The V and R faint end slopes are surprisingly
identical: alpha = -1.07+-0.09. Representative Schechter function parameters
for H_0=100 are: M^*_R = -20.88+-0.09, phi^*_R = 0.016+-0.003 Mpc^-3 and M^*_V
= -20.23+-0.09, phi^*_V = 0.020+-0.003 Mpc^-3. The V and R local luminosity
densities, j_R = (1.9+-0.6)x10^8 and j_V = (2.2+-0.7)x10^8 L_sun, are in
essential agreement with the recent 2dF and SDSS determinations.
  All low surface brightness (LSB) galaxies fall in the large scale structure
delineated by high surface brightness galaxies. The properties and surface
number density of our LSB galaxies are consistent with the LSB galaxy catalog
of O'Neil, Bothun & Cornell, suggesting that our samples are complete for LSB
galaxies to the magnitude limits. We measure colors, surface brightnesses, and
luminosities for our samples, and find strong correlations among these galaxy
properties.

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The categories of this paper are: nucl-ex
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The categories of this paper are: q-alg
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The categories of this paper are: hep-lat
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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: cond-mat
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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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: cs
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-th