• DOI:10.1063/1.3636038
• Corpus ID: 118684347

Star Formation in Molecular Clouds

@article{Krumholz2011StarFI,
  title={Star Formation in Molecular Clouds},
  author={Mark R. Krumholz},
  journal={arXiv: Astrophysics of Galaxies},
  year={2011},
  volume={1386},
  pages={9-57}
}

• M. Krumholz
• Published 26 January 2011
• Physics
• arXiv: Astrophysics of Galaxies

Star formation is one of the least understood processes in cosmic evolution. It is difficult to formulate a general theory for star formation in part because of the wide range of physical processes involved. The interstellar gas out of which stars form is a supersonically turbulent plasma governed by magnetohydrodynamics. This is hard enough by itself, since we do not understand even subsonic hydrodynamic turbulence very well, let alone supersonic non‐ideal MHD turbulence. However, the behavior of star‐forming clouds in the ISM is also obviously influenced by gravity, which adds complexity, and by both continuum and line radiative processes. Finally, the behavior of star‐forming clouds is influenced by a wide variety of chemical processes, including formation and destruction of molecules and dust grains (which changes the thermodynamic behavior of the gas) and changes in ionization state (which alter how strongly the gas couples to magnetic fields). As a result of these complexities, there is nothing like...