Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simulating Galaxies and Galaxy Clusters   The X-ray luminosities of the hot halo gas around simulated, Milky Way like
disk galaxies have been determined, as a function of redshift. The X-ray
luminosity increases significantly with redshift, in some cases as much as a
factor 30 going from z=0 to 2. Consequently, the optimal detection redshift can
be >~0.5.
  Results of fully cosmological simulations of galaxy groups and clusters,
incorporating star formation, chemical evolution with non-instantaneous
recycling, metal-dependent radiative cooling, galactic super-winds and thermal
conduction are presented. X-ray luminosities at z=0 are somewhat high and
central entropies somewhat low compared to observations. This is likely a
combined effect of chemical evolution and metal-dependent, radiative cooling.
Central ICM abundance profiles are somewhat steep, and the observed level of
ICM enrichment can only be reproduced with IMFs more top-heavy than the
Salpeter IMF. In agreement with observations it is found that the iron in the
ICM is in place already at z~1. The [Si/Fe] of the ICM decreases with time, and
increases slightly with radius at a given time. The cluster galaxies match the
observed "red sequence" very well, and the metallicity of cluster galaxies
increases with galaxy mass, as observed.

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The categories of this paper are: hep-ex
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The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: q-alg
3
The categories of this paper are: physics
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: econ
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con