Contraction of rotating magnetized clouds

Details Contraction of rotating magnetized clouds Contraction of rotating magnetized clouds

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.242..535n&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 242, Feb. 15, 1990, p. 535-543.

Astronomy and Astrophysics

Astronomy

9

Gyromagnetism, Interstellar Gas, Interstellar Magnetic Fields, Molecular Clouds, Angular Momentum, Binary Stars, Density Distribution, Magnetic Flux

Scientific paper

The contraction of a rotating cloud embedded in a medium of uniform density permeated by a magnetic field is studied with a simplified model. A model of a cloud with subcritical mass and a core in magnetohydrostatic equilibrium is constructed and used to investigate the quasi-static contraction of the core due to magnetic flux loss. The stage at which the core in quasi-equilibrium begins angular momentum-conserving contraction is determined by comparing the time-scale of angular momentum loss with the time-scale of contraction. Also, the angular momentum loss from a dynamically contracting cloud and core is examined. The implications of the results for studying the orbital periods of binary stars are noted.

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