Galactic stellar and substellar initial mass function

  title={Galactic stellar and substellar initial mass function},
  author={Gilles Chabrier},
  journal={Publications of the Astronomical Society of the Pacific},
  • G. Chabrier
  • Published 22 April 2003
  • Physics
  • Publications of the Astronomical Society of the Pacific
We review recent determinations of the present-day mass function (PDMF) and initial mass function (IMF) in various components of the Galaxy—disk, spheroid, young, and globular clusters—and in conditions characteristic of early star formation. As a general feature, the IMF is found to depend weakly on the environment and to be well described by a power-law form forM , and a lognormal form below, except possibly for m!1 early star formation conditions. The disk IMF for single objects has a… 
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