Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Tully-Fisher relation and its evolution with redshift in
  cosmological simulations of disc galaxy formation   We present predictions on the evolution of the Tully-Fisher (TF) relation
with redshift, based on cosmological N-body/hydrodynamical simulations of disc
galaxy formation and evolution. The simulations invoke star formation and
stellar feedback, chemical evolution with non-instantaneous recycling,
metallicity dependent radiative cooling and effects of a meta-galactic UV
field, including simplified radiative transfer.
  At z=0, the simulated and empirical TF relations are offset by about 0.4
magnitudes (1 sigma) in the B and I bands. The origin of these offsets is
somewhat unclear, but it may not necessarily be a problem of the simulations
only.
  As to evolution, we find a brightening of the TF relation between z=0 and z=1
of about 0.85 mag in rest-frame B band, with a non-evolving slope. The
brightening we predict is intermediate between the (still quite discrepant)
observational estimates.
  This evolution is primarily a luminosity effect, while the stellar mass TF
relation shows negligible evolution. The individual galaxies do gain stellar
mass between z=1 and z=0, by a 50-100%; but they also correspondingly increase
their characteristic circular speed. As a consequence, individually they mainly
evolve ALONG the stellar mass TF relation, while the relation as such does not
show any significant evolution.

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The categories of this paper are: nlin
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The categories of this paper are: supr-con
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga