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Title:
The initial mass function and global rates of mass, momentum, and energy input to the interstellar medium via stellar winds
Authors:
van Buren, D.
Affiliation:
AA(Joint Institute for Laboratory Astrophysics, Boulder, CO; California, University, Berkeley)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 294, July 15, 1985, p. 567-577. Research supported by the University of California. (ApJ Homepage)
Publication Date:
07/1985
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Interstellar Matter, Star Distribution, Stellar Evolution, Stellar Mass Ejection, Stellar Winds, Energy Transfer, Hertzsprung-Russell Diagram, Mass Transfer, Momentum Transfer, Statistical Analysis, Stellar Luminosity, Stellar Mass, Supernovae
DOI:
10.1086/163324
Bibliographic Code:
1985ApJ...294..567V

Abstract

Published observational data are compiled and analyzed, using theoretical stellar-evolution models to determine the global rates of mass, momentum, and energy injected into the interstellar medium (ISM) by stellar winds. Expressions derived include psi = 0.00054 x (M to the -1.03) stars formed/sq kpc yr log M (where M is the initial mass function in solar mass units) and mass-loss = (2 x 10 to the -13th) x (L to the 1.25) solar mass/yr (with L in solar luminosity units). It is found that the wind/supernova injection of energy into the ISM and the mass loss from stars of 5 solar mass or more are approximately balanced by the dissipation of energy by cloud-cloud collisions and the formation of stars, respectively.

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