The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 37 Issue 1
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- Pages.73.1-73.1
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- 2012
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- 1226-2692(pISSN)
Model Simulations for the Dust-Scattered Far-Ultraviolet in the Orion-Eridanus Superbubble
- Jo, Young-Soo (Korea Advanced Institute of Science and Technology (KAIST)) ;
- Min, Kyoung-Wook (Korea Advanced Institute of Science and Technology (KAIST)) ;
- Lim, Tae-Ho (Korea Advanced Institute of Science and Technology (KAIST)) ;
- Seon, Kwang-Il (Korea Astronomy and Space Science Institute (KASI))
- Published : 2012.04.03
Abstract
We present the results of dust scattering simulations carried out for the Orion Eridanus Superbubble region by comparing them with observations made in the far-ultraviolet. The albedo and the phase function asymmetry factor (g-factor) of interstellar grains were estimated as well as the distance and thickness of the dust layers. The results are: 0.39-0.45 for the albedo and 0.25-0.65 for the g-factor, in good agreement with previous determinations and theoretical predictions. The distance of the assumed single dust layer, modeled for the Orion Molecular Cloud Complex, was estimated to be -110 pc and the thickness ranged from -130 at the core to -50 pc at the boundary for the region of the present interest, implying that the dust cloud is located in front of the Superbubble. The simulation result also indicates that a thin (-10 pc) dust shell surrounds the inner X-ray cavities of hot gas at a distance of -70-90 pc.
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