Kompaneets Model Fitting of the Orion-Eridanus Superbubble

Abstract

Winds and supernovae from OB associations create large cavities in the interstellar medium referred to as superbubbles. The Orion molecular clouds are the nearest high mass star-forming region and have created a highly elongated, 20 degree x 45 degree, superbubble. We fit Kompaneets models to the Orion-Eridanus superbubble and find that a model where the Eridanus side of the superbubble is oriented away from the Sun provides a marginal fit. Because this model requires an unusually small scaleheight of 40 pc and has the superbubble inclined 35 degrees from the normal to the Galactic plane, we propose that this model should be treated as a general framework for modelling the Orion-Eridanus superbubble, with a secondary physical mechanism not included in the Kompaneets model required to fully account for the orientation and elongation of the superbubble.

15 pages, 5 figures, 2 tables, accepted by MNRAS, minor grammatical changes

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Cited by in corpus (8)

• 3D dynamics of the Orion cloud complex -- Discovery of coherent radial gas motions at the 100-pc scale
• Nested shells reveal the rejuvenation of the Orion-Eridanus superbubble
• The magnetic environment of the Orion-Eridanus superbubble as revealed by Planck
• Orion A's complete 3D magnetic field morphology
• Nobeyama 45-m Mapping Observations toward Orion A.I. Molecular Outflows
• Kompaneets Model Fitting of the Orion-Eridanus Superbubble II: Thinking Outside of Barnard's Loop
• On the origin of the North Celestial Pole Loop
• Energy conservation in the thin layer approximation: VI. Bubbles and super-bubbles