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A Note about Multiple Systems of Dense Molecular Clouds

Published online by Cambridge University Press:  12 April 2016

Peter Vanýsek
Peter Vanýsek*
Affiliation:
Department of Astronomy and Astrophysics, Charles University, Prague, Czechoslovakia

Abstract

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The space distribution of some small dense clouds with point-like IR sources, resembles the clustering of young OB stars. It can be assumed that such objects contain heavy obscured high-luminosity stars on the ZAMS. From the comparison of infrared and radio data it follows that in typical cases, only one B star is the source of the radiation of the cloud. The total mass of the cloud is of the order of one solar mass. If the individual fragments of the cloud are gravitationally unstable, then in the later stage of the evolution only low-mass stars are formed. One can therefore expect that young OB stars are most frequently accompanied by low-mass pre-Main Sequence stars.

Type
Part II: Evolutionary Trends in Wide Binary Systems
Information
International Astronomical Union Colloquium , Volume 69: Binary and Multiple Stars as Tracers of Stellar Evolution , 1982 , pp. 105 - 108
Copyright
Copyright © Reidel 1982

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