Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proto-Galactic Starbursts at High Redshift   We have computed the evolving ultraviolet-millimeter spectral energy
distribution (SED) produced by proto-galactic starbursts at high redshift,
incorporating the chemical evolution of the interstellar medium in a consistent
manner. Dust extinction is calculated in a novel way, that is not based on
empirical calibrations of extinction curves, but rather on the lifetime of
molecular clouds which delays the emergence of each successive generation of
stars at ultraviolet wavelengths by typically 15 Myr. The predicted rest-frame
far-infrared to millimeter-wave emission includes the calculation of molecular
emission-line luminosities ($^{12}$CO and O$_{2}$ among other molecules)
consistent with the evolving chemical abundances. Here we present details of
this new model, along with the results of comparing its predictions with
several high-redshift observables, namely: the ultraviolet SEDs of Lyman-limit
galaxies, the high-redshift radiogalaxies 4C41.17 and 8C1435, the SCUBA
sub-millimeter survey of the Hubble Deep Field (HDF), and the SEDs of
intermediate-redshift elliptical galaxies. With our new reddening method, we
are able to fit the spectrum of the Lyman-limit galaxy 1512-cB58, and we find
an extinction of about 1.9 magnitudes at 1600 {\AA}. The model also predicts
that most Lyman-limit galaxies should have a value of $\alpha$ inside that
range, as it is observed. The 850 $\mu$m flux density of a typical Lyman-limit
galaxy is expected to be only $\simeq 0.5$ mJy, and therefore the optical
counterparts of the most luminous sub-mm sources in the HDF (or any other
currently feasible sub-mm survey) are unlikely to be Lyman-break galaxies.

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The categories of this paper are: hep-th
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
1
The categories of this paper are: cs
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The categories of this paper are: quant-ph
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The categories of this paper are: stat
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th