Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...459..555w&link_type=abstract
Astrophysical Journal v.459, p.555
Astronomy and Astrophysics
Astronomy
14
Galaxy: Globular Clusters: General, Ism: Kinematics And Dynamics, Stars: Formation
Scientific paper
We analyze the effects a globular cluster passing through the disk of a galaxy will have on the galaxy's interstellar medium. Analysis based on the impact approximation and disk stability criteria suggests that such passage will trigger star formation in a region between 10 and 100 pc in diameter within the disk of the galaxy. Since globular clusters pass through our Galaxy every 106 yr, this may account for a small but still significant amount of the star formation in our Galaxy. In galaxies with weak spiral density waves and abundant subcritical H I gas, the interaction of globular clusters with the interstellar medium may play an important role in forming stars. The discovery of H I bubbles in the interstellar medium of other galaxies might be caused by a globular cluster triggering a wave of self-propagating star formation in their disks.
Higdon James L.
Staveley--Smith Lister
Wallin John F.
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