The conditions are investigated for development of Kelvin-Helmoltz instabilities along a collimated wind flow from a low-mass star surrounded by a dense circumstellar disk, which could give rise to condensations with the characteristics of the chain of HH knots in the HH 7-11 system. The flow, using the observational parameters of the source, turns out to be clearly unstable. A simple estimate is given of the instability time scale, which turns out to be in good agreement with the characteristic time of development for outflows from low-mass young stellar objects.
On the instability time scale of the outflow associated with the HH 7-11 chain
BUSSO, Maurizio Maria;
1987
Abstract
The conditions are investigated for development of Kelvin-Helmoltz instabilities along a collimated wind flow from a low-mass star surrounded by a dense circumstellar disk, which could give rise to condensations with the characteristics of the chain of HH knots in the HH 7-11 system. The flow, using the observational parameters of the source, turns out to be clearly unstable. A simple estimate is given of the instability time scale, which turns out to be in good agreement with the characteristic time of development for outflows from low-mass young stellar objects.File in questo prodotto:
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