2004/03/31 by M. S. Oey, Guillermo Garcı́a-Segura, G. Garcia-Segura · 63 citations
Physics and Astronomy · #Ambient pressure #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Galaxies: Formation, Evolution, Phenomena #Galaxy #Interstellar medium #Meteorology #Physics #Star formation #Stellar, planetary, and galactic studies #Superbubble #Supernova #astro-ph
paper · pdf · doi:10.1086/421483
published in The Astrophysical Journal 613(1), 302-311 (IOP Publishing) · 13 pp, 8 figs; accepted to ApJ
arxiv created 2004/03/31 · openalex publication_date 2004/09/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
High ambient interstellar pressure is suggested as a possible factor to explain the ubiquitous observed growth rate discrepancy for supernova-driven superbubbles and stellar wind bubbles. Pressures of P / k ~ 10 5 cm -3 K are plausible for regions with high star formation rates, and these values are intermediate between the estimated Galactic midplane pressure and those observed in starburst galaxies. High-pressure components also are commonly seen in Galactic interstellar medium (ISM) localizations. We demonstrate the sensitivity of shell growth to the ambient pressure and suggest that superbubbles ultimately might serve as ISM barometers.