publication . Preprint . Article . 2011

Dust growth and grain size distribution

Hiroyuki Hirashita; Tzu-Ming Kuo;
Open Access English
  • Published: 25 May 2011
Grain growth by the accretion of metals in interstellar clouds (called `grain growth') could be one of the dominant processes that determine the dust content in galaxies. The importance of grain size distribution for the grain growth is demonstrated in this paper. First, we derive an analytical formula that gives the grain size distribution after the grain growth in individual clouds for any initial grain size distribution. The time-scale of the grain growth is very sensitive to grain size distribution, since the grain growth is mainly regulated by the surface to volume ratio of grains. Next, we implement the results of grain growth into dust enrichment models o...
arXiv: Astrophysics::Galaxy AstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics
free text keywords: Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, Space and Planetary Science, Astronomy and Astrophysics, Surface-area-to-volume ratio, Interstellar medium, Physics, Grain size, Interstellar cloud, Grain growth, Astrophysics, Particle-size distribution, Galaxy, Cosmic dust
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