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1994PASP..106...25G - Publ. Astron. Soc. Pac., 106, 25-37 (1994/January-0)
OB associations : massive stars in context.
GARMANY C.D.
Abstract (from CDS):
This review will focus on what is known about hte loose clustering of massive stars termed OB associations. These associations ontain many, but byno means all, of the stars with masses greater than about 15 solar masses. Most of our knowledge of the stellar content of the OB associations in our own Galaxy is surprisingly sketchy due to their large angular size, but large-field CCD detectors are changing this. Magellanic Cloud associations can now be compared with OB associations in our own Galaxy, and the initial mass function shows suprising variations. The physical cause of these variations is still unknown. Another development is the study of embedded star clusters: infrared array detectors have been probing the buried stars in molecular clouds and finding an unexpectedly large population of these objects. Both these young IR clusters, and a springling of evolved red supergiants, suggest that the star formation history of OB associations may be more complicated than we have supposed.
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Simbad objects: 30
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