Abstract
Counts of hot and luminous stars in a number of associations in the Galaxy and Magellanic Clouds enable one to directly investigate the numbers and types of massive stars. There seems to be little, if any, dependence of the slope of the Intial Mass Function, or the Mupper on the initial composition of the stars. Indirect estimates of numbers of massive stars in various more distant environments are reviewed and discussed within a framework of a calibration of the methods using the stellar census of 30 Doradus. Very young starbursts, containing large numbers of massive stars, seem to be composed of smaller sub-units similar or somewhat larger than that object. These units might be newly born globular clusters.
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Conti, P.S. (1994). Massive Star Distribution in External Galaxies and Starburst Regions. In: Vanbeveren, D., van Rensbergen, W., de Loore, C. (eds) Evolution of Massive Stars. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1080-8_3
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DOI: https://doi.org/10.1007/978-94-011-1080-8_3
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