The formation of interstellar clouds

Details The formation of interstellar clouds The formation of interstellar clouds

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989plap.work..161s&link_type=abstract

In ESA, Proceedings of an International School and Workshop on Plasma Astrophysics, Volume 1 p 161-164 (SEE N89-24910 18-75)

Physics

Cloud Physics, Gravitational Collapse, Molecular Clouds, Plasma Heating, Plasma Pinch, Interstellar Matter, Oblate Spheroids, Pressure Gradients, Prolate Spheroids, Star Formation

Scientific paper

The collapse of a cooling interstellar protocloud is investigated. Confinement is by an ambient medium rather than gravity. Large-scale thermal and magnetic pressure gradients across the cloud guide the collapse. The hot cloud is kept close to uniform by a short sound-crossing time. Prolate and oblate clouds with criteria for internal shock formation are analyzed. Cool disks and filaments are formed from the spheroidal protoclouds. The type of collapse and final sheet column density depends sensitively on the cooling function. Further collapse, if constrained to take place along field lines, then produces cold filamentary structures and striated sheets.

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