منابع مشابه
First Galaxies: Exploring the Reionization Epoch
Executive Summary: Studies of the nature of the first galaxies, and of the processes that led to their assembly and buildup, are of compelling importance. Not only did the first generation of galaxies likely reionize the universe, but they also were the seeds for the diverse population of today’s galaxies and the massive black holes that reside in them. Star formation in the first galaxies was ...
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In popular cold dark matter cosmological scenarios, stars may have first appeared in significant numbers around a redshift of 10 or so, as the gas within protogalactic halos with virial temperatures Tvir ∼> 10 4.3 K (corresponding to masses comparable to those of present– day dwarf ellipticals) cooled rapidly due to atomic processes and fragmented. It is this ‘second generation’ of subgalactic ...
متن کاملThe Epoch of Reionization
We have modelled the process of reionization of the intergalactic medium (IGM) by photoionization by galaxies, in order to learn what galaxy formation in the framework of the CDM model predicts for the epoch of reionization. We use a sophisticated semi-analytic model of galaxy formation to track the formation of these galaxies, their influence on the IGM, and the back-reaction of the state of t...
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ژورنال
عنوان ژورنال: Revue des études slaves
سال: 2016
ISSN: 0080-2557,2117-718X
DOI: 10.4000/res.1031