Kompaneets Model Fitting of the Orion-Eridanus Superbubble II: Thinking Outside of Barnard's Loop

Abstract

The Orion star-forming region is the nearest active high-mass star-forming region and has created a large superbubble, the Orion-Eridanus superbubble. Recent work by Ochsendorf et al. has extended the accepted boundary of the superbubble. We fit Kompaneets models of superbubbles expanding in exponential atmospheres to the new, larger shape of the Orion-Eridanus superbubble. We find that this larger morphology of the superbubble is consistent with the evolution of the superbubble being primarily controlled by expansion into the exponential Galactic disk ISM if the superbubble is oriented with the Eridanus side farther from the Sun than the Orion side. Unlike previous Kompaneets model fits that required abnormally small scale heights for the Galactic disk (<40 pc), we find morphologically consistent models with scale heights of 80 pc, similar to that expected for the Galactic disk.

8 pages, 3 figures, accepted by ApJ, minor grammatical changes

References in corpus (7)

• The distance to the Orion Nebula
• A Parallactic Distance of 389 +24/-21 parsecs to the Orion Nebula Cluster from Very Long Baseline Array Observations
• Three-Dimensional Simulations of Magnetized Superbubbles: New Insights into the Importance of MHD Effects on Observed Quantities
• A new catalog of HI supershell candidates in the outer part of the Galaxy
• Molecular Hydrogen Fluorescence in the Eridanus Superbubble
• The Origin of Ionized Filaments Within the Orion-Eridanus Superbubble
• Kompaneets Model Fitting of the Orion-Eridanus Superbubble

Cited by in corpus (9)

• Properties of the dense core population in Orion B as seen by the Herschel Gould Belt survey
• Gas phase Elemental abundances in Molecular cloudS (GEMS). IV. Observational results and statistical trends
• Orion A's complete 3D magnetic field morphology
• A 3D View of Orion: I. Barnard's Loop
• On the origin of the North Celestial Pole Loop
• The SRG/eROSITA diffuse soft X-ray background. I. The local hot bubble in the western Galactic hemisphere
• The Orion-Taurus ridge: a synchrotron radio loop at the edge of the Orion-Eridanus superbubble
• On the Hα faintness of the North Polar Spur
• Energy conservation in the thin layer approximation: VI. Bubbles and super-bubbles