Dust Production in the High-Redshift Universe

Details Dust Production in the High-Redshift Universe Dust Production in the High-Redshift Universe

2005-11-04

arxiv.org/abs/astro-ph/0511147v3

Astronomy and Astrophysics

Astrophysics

7 pages, 3 figures; to be published in 'Stellar Evolution at Low Metallicity: Mass Loss, Explosions, Cosmology', 2006, ASP Con

Scientific paper

How much dust can be produced in the early Universe? Does dust production depend on the average heavy-metal content of the hosting galaxy? Considering supernova explosions, massive stars (Wolf-Rayet, LBV and RSG), and relatively massive AGB stars among possible dust-generating objects in the early Universe, we find that SN remnants can be regarded as the main source of the primordial dust. However, this conclusion is based on highly uncertain (and probably over-estimated) dust production rates. Despite all the uncertainties, interstellar extinction must be taken into account while observing high-redshift objects.

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