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On the origin of broad line wings in molecular cloud spectra

Published online by Cambridge University Press:  03 August 2017

Bruce G. Elmegreen
Bruce G. Elmegreen*
Affiliation:
IBM Thomas J. Watson Research Center P.O. Box 218, Yorktown Heights, N.Y. 10598 USA

Abstract

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The broad line wings in molecular cloud spectra are proposed to result from strong magnetic waves on the periphery of dense cores and in the intercore regions where the Alfvén velocity should be larger than average. The observed line profiles are reproduced by a simple but realistic model, and the ratio of the broad to the narrow line components is found to equal approximately three, independent of cloud parameters, as long as the core/intercore contrast in the local average density is sufficiently large. Interactions between the magnetic waves should produce dense clumps in the non-linear splash regions between converging flows.

Type
Shocks and Instabilities
Information
Symposium - International Astronomical Union , Volume 147: Fragmentation of Molecular Clouds and Star Formation , 1991 , pp. 205 - 209
Copyright
Copyright © Kluwer 1991 

References

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