Kavli Affiliate: Roberto Maiolino
| First 5 Authors: Raffaella Schneider, Roberto Maiolino, , ,
| Summary:
Dust-obscured star formation has dominated the cosmic history of star
formation since z = 4. However, the recent finding of significant amount of
dust in galaxies out to z = 8 has opened the new frontier of investigating the
origin of dust also in the earliest phases of galaxy formation, within the
first 1.5 billion years from the Big Bang. This is a key and rapid transition
phase for the evolution of dust, as galaxy evolutionary timescales become
comparable with the formation timescales of dust. It is also an area of
research that is experiencing an impressive growth, especially thanks to the
recent results from cutting edge observing facilities, groundbased and in
space. Our aim is to provide an overview of the several findings on dust
formation and evolution at z > 4, and of the theoretical efforts to explain the
observational results. We have organized the review in two parts. In the first
part, presented here, we focus on dust sources, primarily supernovae and
asymptotic giant branch stars, and the subsequent reprocessing of dust in the
interstellar medium, though grain destruction and growth. We also discuss other
dust production mechanisms, such as Red Super Giants, Wolf-Rayet stars,
Classical Novae, type Ia supernovae, and dust formation in quasar winds. The
focus of this first part is on theoretical models of dust production sources,
although we also discuss the comparison with observations. In the second part,
which will be published later on, we will focus on the recent observational
results at z > 4, discussing the theoretical models that have been proposed to
interpret those results, as well as the profound implications for galaxy
formation.
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