NONUNIVERSAL STAR FORMATION EFFICIENCY IN TURBULENT ISM

@article{Semenov2016NONUNIVERSALSF,
  title={NONUNIVERSAL STAR FORMATION EFFICIENCY IN TURBULENT ISM},
  author={Vadim A. Semenov and Andrey V. Kravtsov and Nickolay Y. Gnedin},
  journal={The Astrophysical Journal},
  year={2016},
  volume={826}
}
We present a study of a star formation prescription in which star formation efficiency (SFE) depends on local gas density and turbulent velocity dispersion, as suggested by direct simulations of SF in turbulent giant molecular clouds (GMCs). We test the model using a simulation of an isolated Milky-Way-sized galaxy with a self-consistent treatment of turbulence on unresolved scales. We show that this prescription predicts a wide variation of local SFE per free-fall time, ∼ 0.1%–10%, and gas… 

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