Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Galactic Satellite Systems: Radial Distribution and Environment
  Dependence of Galaxy Morphology   We have studied the radial distribution of the early (E/S0) and late (S/Irr)
types of satellites around bright host galaxies. We made a volume-limited
sample of 4,986 satellites brighter than M_r = -18.0 associated with 2,254
hosts brighter than M_r =-19.0 from the SDSS DR5 sample. The morphology of
satellites is determined by an automated morphology classifier, but the host
galaxies are visually classified. We found segregation of satellite morphology
as a function of the projected distance from the host galaxy. The amplitude and
shape of the early-type satellite fraction profile are found to depend on the
host luminosity. This is the morphology-radius/density relation at the galactic
scale. There is a strong tendency for morphology conformity between the host
galaxy and its satellites. The early-type fraction of satellites hosted by
early-type galaxies is systematically larger than that of late-type hosts, and
is a strong function of the distance from the host galaxies. Fainter satellites
are more vulnerable to the morphology transformation effects of hosts.
Dependence of satellite morphology on the large-scale background density was
detected. The fraction of early-type satellites increases in high density
regions for both early and late-type hosts. It is argued that the conformity in
morphology of galactic satellite system is mainly originated by the
hydrodynamical and radiative effects of hosts on satellites.

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The categories of this paper are: math
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The categories of this paper are: funct-an
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The categories of this paper are: stat
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The categories of this paper are: quant-ph
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The categories of this paper are: nlin
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The categories of this paper are: adap-org
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
23
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: plasm-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: cs
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The categories of this paper are: dg-ga