Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Galactic chemical evolution in hierarchical formation models - II. The
  Intracluster Medium   We use the cosmological semi-analytic model (SAM) for galaxy formation
presented in Paper I to study the metallicities and abundance ratios of the
intracluster medium (ICM) within the hierarchical structure formation paradigm.
By requiring a slightly flat IMF (x=1.15) and a two-population
delay-time-distribution (DTD) for SN Ia explosions we found previously that
this model is able to reproduce the abundance ratios and supernova rates of
early-type galaxies in the local Universe. Predictions for elemental abundances
in the ICM pose a further test of the model. We find that with the fiducial
model from Paper I the overall metal content of the ICM is too low, although
the abundance ratios are in good agreement with the data. However, we find that
allowing a fraction of the metal-enriched material ejected by stars to be
deposited directly into the hot ICM, instead of being deposited into the cold
ISM, appears to be a plausible and physically-motivated solution.

5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
3
The categories of this paper are: physics