Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The cosmic infrared background (CIRB) and the role of the "local
  environment of galaxies" in the origin of present-day stars   A combination of evidence is presented suggesting that the majority of the
stars in today's galaxies were born during a luminous infrared phase (LIRP)
triggered by the local environment of galaxies. The CIRB is a fossil record of
these LIRPs and therefore reflects the influence of triggered star formation
through galaxy-galaxy interactions, including non merging tidal encounters.
This scenario, in which galaxies experienced several LIRPs in their history, is
consistent with the measured redshift evolution of the cosmic density of star
formation rates and of stellar masses of galaxies.

12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg