Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Star Formation Histories versus Redshift : Consequences for Overall
  Metallicity and Deuterium Destruction   The flood of new data on deep surveys, and above all the CFRS
(Canada-France-Redshift-Survey), has had a great impact on studies of galactic
evolution. On the basis of cosmological models consistent with the improved
values of the Hubble parameter, different star formation histories are tested
against the observed UV, B and IR broad band comoving luminosity densities.
Using these spectrophotometric results, we analyze the global metal enrichment
with the help of chemical evolutionary models and we discuss the pertinence of
different metallicity tracers (quasar absorption systems and clusters of
galaxies) as representative of the bulk chemical evolution of the Universe.
Moreover, as deuterium is very fragile, this isotope is destroyed in all stars
and its evolution is particularly sensitive to the history of star formation.
Relying on models constrained to fit the solar vicinity, it is shown that
models with high D destruction corresponding to a large decrease of the star
formation rate (SFR) from $z=1.5$ to 0 are in good agreement with
spectrophotometric data. In contrast, low D destruction models which require
only a moderate variation of the SFR in the same redshift range seem to
encounter difficulties in matching the evolution of the luminosity densities
(UV, B and IR) versus redshift. The sensitivity of the results with the
cosmological models of the universe is discussed.

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The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
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The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th