Superbubble evolution including the star-forming clouds: Is it possible to reconcile LMC observations with model predictions?

Abstract

Here we present a possible solution to the apparent discrepancy between the observed properties of LMC bubbles and the standard, constant density bubble model. A two-dimensional model of a wind-driven bubble expanding from a flattened giant molecular cloud is examined. We conclude that the expansion velocities derived from spherically symmetric models are not always applicable to elongated young bubbles seen almost face-on due to the LMC orientation. In addition, an observational test to differentiate between spherical and elongated bubbles seen face-on is discussed.

25 pages, 7 figures, accepted to ApJ (September, 1999 issue)

References in corpus (4)

• Superbubbles in magnetized interstellar media --- Blowout or confinement ? ---
• The Collisions of HVCs with a Magnetized Gaseous Galactic Disk
• On the Fate of Processed Matter in Dwarf Galaxies
• Shell formation and star formation in superbubble DEM 192

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• The HI Environment of Three Superbubbles in the Large Magellanic Cloud
• Detailed Kinematic Study of the Ionized and Neutral Gas in the Complex of Star Formation in the Galaxy IC 1613
• On the recent history of star formation in the BCD galaxy VII Zw403
• Superbubble Activity in Star-Forming Galaxies