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arXiv · 1207.2249

Simulation Study of Dust-Scattered Far-Ultraviolet Emission in the Orion-Eridanus Superbubble

Young-Soo Jo·Kyoung-Wook Min·Tae-Ho Lim·Kwang-Il Seon
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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$^{+0.02}_{-0.04}$ for the albedo and 0.45$^{+0.2}_{-0.2}$ 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 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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Young-Soo Jo, Kyoung-Wook Min, Tae-Ho Lim, Kwang-Il Seon. 2012-07-10. Simulation Study of Dust-Scattered Far-Ultraviolet Emission in the Orion-Eridanus Superbubble. https://doi.org/10.1088/0004-637x%2F756%2F1%2F38

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