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Star Formation in the Early Universe

Published online by Cambridge University Press:  05 September 2012

Kazuyuki Omukai
Kazuyuki Omukai*
Affiliation:
Department of Physics, Kyoto University, Kyoto, Japan email: omukai@tap.scphys.kyoto-u.ac.jp
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Abstract

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In low-metallicity environments, massive stars are more easily formed than in the solar neighborhood. In this article, we see the following examples of low-mass star formation. We first describe the first star formation in the universe and argue that they are typically ordinary-sized massive stars, rather than very massive (> 100M⊙) ones. Next, we see how the metal-enrichment changes the thermal evolution of gas, thereby causing the shift of characteristic stellar mass towards lower mass. Finally, we discuss the possibility of forming supermassive stars in some special conditions in young galaxies.

Keywords

Star FormationPop II StarsPop III Stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S279: Death of Massive Stars: Supernovae and Gamma-Ray Bursts , April 2011 , pp. 216 - 223
Copyright
Copyright © International Astronomical Union 2012

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