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Scientific paper
May 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977phdt.........2f&link_type=abstract
Ph.D. Thesis Florida Univ., Gainesville.
Other
1
Braking, Magnetic Fields, Stellar Evolution, Angular Momentum, Magnetic Effects, Stellar Rotation
Scientific paper
Angular momentum is prima facie a formidable obstacle in the theory of star formation: without rotation braking during star formation, stars would rotate with speeds close to that of light. The present investigation suggests that magnetic torques acting on a rotating, contracting, cool interstellar cloud which is permeated by a frozen-in magnetic field coupling the cloud to its surroundings, rotationally decelerate a cloud, constraining it to co-rotate with the background medium. Angular momentum transfer from cool, rotating, stellar-mass condensations, collapsing isothermally on a magnetically-diluted dynamic time scale were examined. Some mechanisms are discussed for forming gravitationally-bound protostellar condensations within cool, dense, molecular clouds. A modified virial approach is employed to calculate time-dependent quantities of interest at cloud's surface in order to estimate the braking efficiency of the magnetic torques.
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