The Supershell-Molecular Cloud Connection in the Milky Way and Beyond
arXiv:1210.0169 · doi:10.1017/S1743921313000525
Abstract
The role of large-scale stellar feedback in the formation of molecular clouds has been investigated observationally by examining the relationship between HI and 12CO(J=1-0) in supershells. Detailed parsec-resolution case studies of two Milky Way supershells demonstrate an enhanced level of molecularisation over both objects, and hence provide the first quantitative observational evidence of increased molecular cloud production in volumes of space affected by supershell activity. Recent results on supergiant shells in the LMC suggest that while they do indeed help to organise the ISM into over-dense structures, their global contribution to molecular cloud formation is of the order of only ~10%.
Proceedings of IAUS 292 - Molecular Gas, Dust, and Star Formation in Galaxies, eds. T. Wong & J. Ott. 4 pages, 3 figures
References in corpus (6)
- Turbulent Structure of a Stratified Supernova-Driven Interstellar Medium
- Star Formation in Disk Galaxies. I. Formation and Evolution of Giant Molecular Clouds via Gravitational Instability and Cloud Collisions
- Simulating the formation of molecular clouds. II. Rapid formation from turbulent initial conditions
- Simulations of spiral galaxies with an active potential: molecular cloud formation and gas dynamics
- Structure of Supergiant Shells in the Large Magellanic Cloud
- Molecular Clouds in Supershells: A Case Study of Three Objects in the Walls of GSH 287+04-17 and GSH 277+00+36