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별생성의 법칙을 전개 : 분자운의 분포밀도

Unfolding the Laws of Star Formation: The Density Distribution of Molecular Clouds
  • 작성자 : KASI
  • 작성일 : 2014-04-14
  • 조회수 : 2988
  • 저자Jouni Kainulainen, Christoph Federrath, Thomas Henning
  • AbsractThe formation of stars shapes the structure and evolution of entire galaxies. The rate and efficiency of this process are affected substantially by the density structure of the individual molecular clouds in which stars form. The most fundamental measure of this structure is the probability density function of volume densities (ρ-PDF), which determines the star formation rates predicted with analytical models. This function has remained unconstrained by observations. We have developed an approach to quantify ρ-PDFs and establish their relation to star formation. The ρ-PDFs instigate a density threshold of star formation and allow us to quantify the star formation efficiency above it. The ρ-PDFs provide new constraints for star formation theories and correctly predict several key properties of the star-forming interstellar medium.
  • 게재정보science(2014.4.11)에 실린 천문우주과학 분야의 연구논문을 게시함
  • 첨부파일
  • 원 문http://www.sciencemag.org/content/344/6180/183
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