The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 37 Issue 2
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- Pages.98.1-98.1
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- 2012
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- 1226-2692(pISSN)
Simulation study of dust-scattered Far-Ultraviolet emission 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 : 2012.10.17
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 were the distance and thickness of the dust layers. The results are as follows: [0.43]_(-0.04)^(+0.02) for the albedo and [0.43]_(-0.2)^(+0.2) 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 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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