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Dark Populations

Published online by Cambridge University Press:  07 August 2017

Joseph Silk
Joseph Silk*
Affiliation:
Departments of Astronomy and Physics, and Center for Particle Astrophysics, University of California, Berkeley

Abstract

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After summarizing the evidence for dark baryonic matter in various environments, I review theoretical considerations relevant to the nature of such a component of the universe in regions where it is the dominant mass fraction. Phenomenological constraints are given on the primordial stellar initial mass function. The primordial rate of star formation is evaluated during the early stages of galaxy formation, utilizing simple theoretical considerations motivated by present day star formation rates. Applications are given to predominantly dark objects whose existence is inferred from galaxy formation theory, including low surface brightness giant and dwarf galaxies. Prospects for detection of dark populations that dominate our own galactic halo are described.

Type
III. The Stellar Populations of Non-Resolved Galaxies
Information
Symposium - International Astronomical Union , Volume 149: The Stellar populations of Galaxies , 1992 , pp. 367 - 378
Copyright
Copyright © Kluwer 

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