Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Origin of Mass--Metallicity Relations, Blue Tilts, and Scaling
  Relations for Metal-poor Globular Cluster Systems   We investigate formation processes and physical properties of globular
cluster systems (GCSs) in galaxies based on high-resolution cosmological
simulations with globular clusters. We focus on metal-poor clusters (MPCs) and
correlations with their host galaxies by assuming that MPC formation is
truncated at a high redshift (z_trun > 6). We find that the correlation between
mean metallicities (Z_gc) of MPCs and their host galaxy luminosities (L)
flattens from z=z_trun to z=0. We also find that the observed relation (Z_gc ~
L^0.15) in MPCs can be reproduced well in the models with Z_gc ~ L^0.5 at
z=z_trun when z_trun ~ 10, if mass-to-light-ratios are assumed to be constant
at z=z_trun. However, better agreement with the observed relation is found for
models with different mass-to-light-ratios between z=z_trun and z=0. It is also
found that the observed color-magnitude relation of luminous MPCs (i.e., ``blue
tilts'') may only have a small contribution from the stripped stellar nuclei of
dwarf galaxies, which have nuclei masses that correlate with their total mass
at z=z_trun. The simulated blue tilts are found to be seen more clearly in more
massive galaxies, which reflects the fact that more massive galaxies at z=0 are
formed from a larger number of dwarfs with stellar nuclei formed at z>z_trun.
The half-number radii (R_e) of GCSs, velocity dispersions of GCSs (sigma), and
their host galaxy masses (M_h) are found to be correlated with one another such
that R_e ~ M_h^{0.57} and sigma ~ M_h^{0.32}.

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The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
16
The categories of this paper are: stat
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio