Electronic Resource
Springer
Astrophysics and space science
233 (1995), S. 195-198
ISSN:
1572-946X
Keywords:
Hydrodynamics
;
Stars: mass loss
;
ISM: Structure
;
Hii regions
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Molecular clouds are clumpy on length scales down to the limits of observational resolution. At least some ultracompactHii regions (UCHiiR) may result from the interaction of a young early type star and this type of cloud. The clumps can act as reservoirs of ionized gas distributed within theHii region. These models reproduce the relatively long lifetimes implied by the population statistics of UCHiiR. We present line profile and emission measure plots based on the simplest case where the flow remains supersonic through to a recombination front. The morphology agrees with the shell-like UCHiiR as classified by Churchwell. The predicted line profiles are broad and double peaked with a separation of about 50 km s−1 for the example given.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00627351
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