Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chemical Abundances and the Hierarchical Clustering   We studied the chemical enrichment of the interstellar medium and stellar
population of the building blocks of current typical galaxies in the field, in
cosmological hydrodynamics simulations. The simulations include detail modeling
of chemical enrichment by SNIa and SNII. In our simulations the metal missing
problem is caused by chemical elements being locked upon in the central regions
(or bulges) mainly, in stars.
  Supernova energy feedback could help to reduce this concentration by
expelling metals to the intergalactic medium.

5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin