Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...136...98m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 136, no. 1, July 1984, p. 98-120.
Astronomy and Astrophysics
Astrophysics
69
Interstellar Gas, Interstellar Magnetic Fields, Molecular Clouds, Star Formation, Angular Momentum, Stellar Models
Scientific paper
The paper reviews the gross features of the interactions between the thermal, gravitational, centrifugal, and magnetic fields of a cool, massive gas cloud, condensing from a warm low-density inter-cloud medium permeated by the local galactic magnetic field. Special attention is paid to the consequences of spontaneous flattening of the cloud along the field, both for interpretation of observations and for the dynamics of break-up into sub-condensations. Magnetic braking is treated by approximate methods that are far simpler than the more rigorous earlier studies for spherical clouds, but which nevertheless yield the essential qualitative results. Future work will take up again the question of changes in field topology, which may cause very different evolutionary paths for the central and the outer regions of a cloud or a fragment.
Mestel Leon
Paris R. B.
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