Mechanical Feedback: From Stellar Wind Bubbles to Starbursts (Review)
M.S. Oey, C. J. Clarke, P. Massey
The current understanding of mechanical feedback is reviewed by
evaluating the standard, adiabatic model for shell formation and
evolution. This model is relevant to phenomena ranging from individual
stellar-wind bubbles to galactic superwinds, forming the basis
for our understanding of the multiphase ISM, IGM, and galactic
evolutionary processes. Although significant discrepancies between
the model and observation have been identified, to date there are none
that require a fundamental revision. A variety of evidence, ranging
over three orders of magnitude in spatial scale, is broadly consistent
with the standard model. This includes kinematics of individual
objects, observations of hot gas, the size distribution of HI
shells, and outflow rates from
starburst galaxies. However, some of the most pressing issues
relating to shell evolution are still outstanding and obstruct efforts
to resolve key questions like the fate of the hot gas.
2001, in Dwarf Galaxies and their Environment,
eds. K. de Boer, R.-J. Dettmar, & U. Klein,
Shaker Verlag, 181.
PostScript preprint
(Uncompress with 'gunzip' if necessary.)
|