Feedback and the Initial Mass function

Abstract

I describe a turbulence-inspired model for the stellar initial mass function which includes feedback and self-regulation via protostellar outflows. A new aspect of the model provides predictions of the star formation rate in molecular clouds and gas complexes. A similar approach is discussed for self-regulation on kiloparsec scales via supernova input, and an expression is presented for the global star formation rate that depends on the turbulent pressure of the interstellar medium.

To appear in IMF@50: The Stellar Initial Mass Function Fifty Years Later, eds E. Corbelli, F. Palla, and H. Zinnecker, held at Abbazia di Spineto, Siena, Italy, May 2004, to be published by Kluwer Acad emic Publishers, Astrophysics and Space Science Library; and in The Young Local Universe, eds. A. Chalabaev, Y. Fukui and T. Montmerle, XXIVth Moriond Astrophysics Meeting held at La Thuile, Aosta Valley, Italy, March, 2004, to be published by World Press

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