Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: MgII Absorbers: Disks, Halos, Satellites, and Pairs?   To understand which parts of galaxies give rise to the variety of observed
MgII absorption profiles seen in QSO spectra, we have embarked upon a program
to generate simulated absorption profiles as they would arise from the many
typical galactic structures we see today. Here, we present preliminary results
for a clumpy, rotating disk which has been sampled by a variety of QSO lines of
sight. The resulting ensemble of simulated profiles is qualitatively similar to
those observed in HIRES spectra of 0.4 < z < 1.0 MgII systems (Churchill, this
volume). Additionally, we discuss the statistical contribution from satellite
galaxies, which would be expected to contribute additional absorption
subcomponents and are likely to have been more numerous at intermediate
redshifts. Our preliminary finding is that the common disk and satellite
components of galaxies may, to a large degree, be the structures giving rise to
a variety of the observed MgII absorption profiles.

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The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
16
The categories of this paper are: stat
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The categories of this paper are: mtrl-th
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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: cond-mat
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: cs
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
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The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph