Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Mid-IR luminosity function of galaxies in the ELAIS Southern fields   We present the first determination of the 15micron luminosity functio
galaxies from the European Large Area ISO survey (ELAIS) southern fields. We
have adopted a new criterion to separate the quiescent, non-evolving and the
starburst, evolving populations based on the ratio of mid-infrared to optical
luminosities. Strong evolution is suggested by our data for the starburst
galaxy population, while normal spiral galaxies are consistent with no
evolution. The starburst population must evolve both in luminosity and in
density with rates of the order L(z) (1+z)^(3.5) and rho(z) (1+z)^3.8 up to
z~1. The evolutionary parameters of our model have been tested by comparing the
model predictions with other observables, like source counts at all flux
density levels (from 0.1 to 300 mJy) and redshift distributions and luminosity
functions at high-z (0.7 < z < 1.0 from HDF-N data). The agreement between our
model predictions and the observed data is remarkably good. We use our data to
estimate the star-formation density of the Universe up to z=0.4 and we use the
luminosity function model to predict the trend of the star-formation history up
to z=1.

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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: eess
9
The categories of this paper are: nlin
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The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
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The categories of this paper are: econ
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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: physics
1
The categories of this paper are: cs
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: solv-int