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.

arXiv comment8 pages, 3 figures, accepted by ApJ, minor grammatical changes

References in corpus (21)

• Galactic Winds
• The distance to the Orion Nebula
• A Full-Sky H-alpha Template for Microwave Foreground Prediction
• A Robotic Wide-Angle H-Alpha Survey of the Southern Sky
• The Wisconsin H-Alpha Mapper Northern Sky Survey
• Distance to Orion KL Measured with VERA
• A Parallactic Distance of 389 +24/-21 parsecs to the Orion Nebula Cluster from Very Long Baseline Array Observations
• The Fine-Scale Structure of the neutral Interstellar Medium in nearby Galaxies
• Superbubbles in magnetized interstellar media --- Blowout or confinement ? ---
• HI shells in the outer Milky Way
• Nested shells reveal the rejuvenation of the Orion-Eridanus superbubble
• Orion revisited. II. The foreground population to Orion A
• Dynamical Evolution and Ionization Structure of an Expanding Superbubble: Application to W4
• HI shells in the Leiden/Argentina/Bonn HI survey
• Three-Dimensional Simulations of Magnetized Superbubbles: New Insights into the Importance of MHD Effects on Observed Quantities
• Intermediate- and High-Velocity Ionized Gas toward zeta Orionis
• A new catalog of HI supershell candidates in the outer part of the Galaxy
• Deep Halpha imagery of the Eridanus shells
• 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 (15)

• Properties of the dense core population in Orion B as seen by the Herschel Gould Belt survey
• 3D dynamics of the Orion cloud complex -- Discovery of coherent radial gas motions at the 100-pc scale
• Gas phase Elemental abundances in Molecular cloudS (GEMS). IV. Observational results and statistical trends
• The magnetic environment of the Orion-Eridanus superbubble as revealed by Planck
• Gas shells and magnetic fields in the Orion-Eridanus superbubble
• Orion A's complete 3D magnetic field morphology
• On the origin of the North Celestial Pole Loop
• A 3D View of Orion: I. Barnard's Loop
• The SRG/eROSITA diffuse soft X-ray background. I. The local hot bubble in the western Galactic hemisphere
• Runaways and shells around the CMa OB1 association
• The cosmic-ray content of the Orion-Eridanus superbubble
• 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
• Low-Frequency Carbon Recombination Lines in the Orion Molecular Cloud Complex
• Energy conservation in the thin layer approximation: VI. Bubbles and super-bubbles