Supernova explosions and star formation in the early universe

G. Chiaki, N. Yoshida, T. Kitayama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


We study the formation of low-mass and extremely metal-poor stars in the early universe. We propose a model that early supernova (SN) explosions trigger the formation of low-mass stars via shell fragmentation. We first perform one-dimensional hydrodynamic calculations until an SN shell expanding through the metal-deficient interstellar medium becomes gravitationally unstable and fragments. We then calculate the evolution of the fragment core semi-analytically. The core eventually fragments again by the dust cooling and we show the low-mass protostars form in the extremely metal-poor environment.

Original languageEnglish
Title of host publicationFirst Stars IV - From Hayashi to the Future -
Number of pages3
Publication statusPublished - 2012
Externally publishedYes
Event1st Stars IV: From Hayashi to the Future - Kyoto, Japan
Duration: 2012 May 212012 May 25

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other1st Stars IV: From Hayashi to the Future


  • stars: formation
  • supernovae: general

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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