By studying the stellar content of star-forming regions with different characteristics, such as gas cloud size, one can determine factors that affect the star-formation process. This paper is part of a study of the stellar content and natal cloud characteristics of a sample of relatively small Galactic star-forming regions. Spectral classifications based on moderate dispersion spectra of the optically visible stars in the regions are presented. The H-alpha, radio, and far-infrared luminosities of the nebulas are used as a check for additional embedded or unidentitied hot stars. A histogram of the most massive star per star-forming unit shows that there is a range in upper mass limits for the sample and that one is statistically sampling a mass function intermediate between that of Selpeter and that of Miller-Scalo.
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Hunter et al. (1990) studied this question.