Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Disk evolution since z=1 in a CDM Universe   Increasingly large populations of disk galaxies are now being observed at
increasingly high redshifts, providing new constraints on our knowledge of how
such galaxies evolve. Are these observations consistent with a cosmology in
which structures form hierarchically? To probe this question, we employ
SPH/N-body galaxy scale simulations of late-type galaxies. We examine the
evolution of these simulated disk galaxies from redshift 1 to 0, looking at the
mass-size and luminosity-size relations, and the thickness parameter, defined
as the ratio of scale-height to scale-length. The structural parameters of our
simulated disks settle down quickly, and after redshift z=1 the galaxies evolve
to become only slightly flatter. Our present day simulated galaxies are larger,
more massive, less bright, and redder than at z=1. The inside-out nature of the
growth of our simulated galaxies reduces, and perhaps eliminates, expectations
of evolution in the size-mass relation.

17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin