The Dynamics of Superbubbles in the Large Magellanic Cloud
M.S. Oey
Based on the stellar populations observed within this sample of LMC
superbubbles, I use a numerical version of the standard, pressuredriven
bubble model to investigate the shell dynamics. The
results fall into two distinct categories corresponding to a subset of
objects for which the observed expansion velocity is too large for the
observed shell radius (``highvelocity'' superbubbles), and a subset
of objects which appears more dynamically consistent with the model
(``lowvelocity superbubbles''). Both subsets of objects imply an
overestimate in the shell growth rate equivalent to an overestimate
in input power by up to an order of magnitude.
The highvelocity objects exhibit Xray
evidence of supernova activity, suggesting that the dynamical
discrepancy is due to acceleration by SNR impacts.
1996 ApJ, 467, 666
Journal article via ADS
Postscript preprint:
dynamics.ps.Z
