論文

査読有り
2016年

The Formation and Destruction of Molecular Clouds and Galactic Star Formation

FROM INTERSTELLAR CLOUDS TO STAR-FORMING GALAXIES: UNIVERSAL PROCESSES?
  • Shu-ichiro Inutsuka
  • ,
  • Tsuyoshi Inoue
  • ,
  • Kazunari Iwasaki
  • ,
  • Takashi Hosokawa
  • ,
  • Masato I. N. Kobayashi

315
開始ページ
61
終了ページ
68
記述言語
英語
掲載種別
研究論文(国際会議プロシーディングス)
DOI
10.1017/S1743921316007262
出版者・発行元
CAMBRIDGE UNIV PRESS

We discuss an overall picture of star formation in the Galaxy. Recent high-resolution magneto-hydrodynamical simulations of two-fluid dynamics with cooling/heating and thermal conduction have shown that the formation of molecular clouds requires multiple episodes of supersonic compression. This finding enables us to create a new scenario of molecular cloud formation through interacting shells or bubbles on galactic scales. We estimate the ensemble averaged growth rate of individual molecular clouds, and predict the associated cloud mass function. This picture naturally explains the accelerated star formation over many million years that was previously reported by stellar age determination in nearby star forming regions. The recent claim of cloud-cloud collisions as a mechanism for forming massive stars and star clusters can be naturally accommodated in this scenario. This explains why massive stars formed in cloud-cloud collisions follows the power-law slope of the mass function of molecular cloud cores repeatedly found in low-mass star forming regions.

リンク情報
DOI
https://doi.org/10.1017/S1743921316007262
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000387795900096&DestApp=WOS_CPL
ID情報
  • DOI : 10.1017/S1743921316007262
  • ISSN : 1743-9213
  • Web of Science ID : WOS:000387795900096

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