Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Using the EAGLE simulations to elucidate the origin of disc surface
  brightness profile breaks as a function of mass and environment   We analyse the surface brightness profiles of disc-type galaxies in the EAGLE
simulations in order to investigate the effects of galaxy mass and environment
on galaxy profile types. Following observational works, we classify the
simulated galaxies by their disc surface brightness profiles into single
exponential (Type I), truncated (Type II) and anti-truncated (Type III)
profiles. In agreement with previous observation and theoretical work, we find
that Type II discs result from truncated star-forming discs that drive radial
gradients in the stellar populations. In contrast, Type III profiles result
from galaxy mergers, extended star-forming discs or the late formation of a
steeper, inner disc. We find that the EAGLE simulations qualitatively reproduce
the observed trends found between profile type frequency and galaxy mass,
morphology and environment, such as the fraction of Type III galaxies
increasing with galaxy mass, and the the fraction of Type II galaxies
increasing with Hubble type. We investigate the lower incidence of Type II
galaxies in galaxy clusters, finding, in a striking similarity to observed
galaxies, that almost no S0-like galaxies in clusters have Type II profiles.
Similarly, the fraction of Type II profiles for disc-dominated galaxies in
clusters is significantly decreased relative to field galaxies. This difference
between field and cluster galaxies is driven by star formation quenching.
Following the cessation of star formation upon entering a galaxy cluster, the
young stellar populations of Type II galaxies simply fade, leaving behind Type
I galaxies.

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The categories of this paper are: hep-th
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The categories of this paper are: math
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
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The categories of this paper are: hep-ex
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The categories of this paper are: funct-an
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The categories of this paper are: cs
18
The categories of this paper are: econ
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The categories of this paper are: stat
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: solv-int