Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.200..159l&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 200, July 1982, p. 159-174.
Astronomy and Astrophysics
Astronomy
163
Early Stars, Mass Spectra, Molecular Clouds, Star Distribution, Stellar Evolution, Stellar Spectra, Star Clusters, Stellar Gravitation, Stellar Mass, Stellar Mass Accretion, Stellar Winds
Scientific paper
Data on the mass spectra of young stars from various regions are studied, with a view to correlations with the properties of the associated molecular clouds and the spatial distributions of stars, in order to arrive at a determination of the initial mass function of stars. The most massive stars seem to form in the dense cores of forming clusters or associations, and the mass of the most massive young star increases systematically with the mass of the associated molecular cloud, in keeping with the view that molecular cloud cores grow by accretion and become progressively more massive and condensed. The more massive stars form by accumulation, rather than fragmentation, in the dense core regions of protoclusters. If stellar winds play an important role in limiting the masses that forming stars can attain, the maximum stellar mass should increase with the ambient gas density and with turbulence. These predictions are borne out by observations.
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