Physics
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981s%26t....61..284b&link_type=abstract
Sky and Telescope, vol. 61, Apr. 1981, p. 284-293.
Physics
2
Gravitational Collapse, Magellanic Clouds, Milky Way Galaxy, Star Formation, B Stars, Cosmic Dust, Globular Clusters, Hydrogen Clouds, Molecular Clouds, Nebulae, O Stars, Star Clusters, Supergiant Stars, Supernovae
Scientific paper
Five broad areas of potential star formation in our galaxy and the Magellanic Clouds are presented. The role of gravitational collapse in concentrating matter into eventual stars is examined briefly. The five areas of research are: (1) giant molecular clouds with dimensions of 50 to 100 parsecs and masses equivalent to 100,000 or more suns; (2) the proximity of an H II emission nebula with an embedded or attached cluster of association of O and B stars to a large molecular cloud; (3) the larger so-called globules, notably the roundish and often isolated dark nebulae called Barnard objects, of which 200 or so have been identified within 500 parsecs of the sun; (4) close passage or collisions between interstellar clouds; and (5) supernova explosions. The Large Magellanic Clouds are also examined as an example of an area of potential star formation without the protection of a cosmic dust cloud. Finally, the likelihood that many new stars might possess planets and perhaps even life is discussed.
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