Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Halo Occupation Number and Spatial Distribution of 2dF Galaxies   We use the clustering results obtained by Madgwick et al. (2003) for a sample
of 96,791 2dF galaxies with redshift 0.01 < z < 0.15 to study the distribution
of late-type and early-type galaxies within dark matter haloes of different
mass. The adopted method relies on the connection between the distribution of
sources within haloes and their clustering properties by focussing on the issue
of the halo occupation function i.e. the probability distribution of the number
of galaxies brighter than some luminosity threshold hosted by a virialized halo
of given mass. Within this framework, the distribution of galaxies within
haloes is shown to determine galaxy-galaxy clustering on small scales, being
responsible for the observed power-law behaviour at separations r < 3 Mpc. For
a more extended analysis, we refer the reader to Magliocchetti & Porciani
(2003)

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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: chem-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: stat
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The categories of this paper are: physics
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The categories of this paper are: hep-ex
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The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph