Dust Distribution and Properties in the Orion-Eridanus Superbubble Region

Details Dust Distribution and Properties in the Orion-Eridanus Superbubble Region Dust Distribution and Properties in the Orion-Eridanus Superbubble Region

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21934306j&link_type=abstract

American Astronomical Society, AAS Meeting #219, #343.06

Astronomy and Astrophysics

Astronomy

Scientific paper

We have derived not only the albedo and scattering asymmetry factor g ≡ of the interstellar dust grains at 1565 Å but also the 3D distribution of dust clouds using FIMS/SPEAR observations of diffuse radiation in Orion Eridanus Superbubble region. Initial dust distribution for simulation was set by referring SFD dust extinction map and J.-L. Vergely's 3D dust extinction distribution map. The dust clouds were roughly divided into 5 different regions according to the E (B - V) value, distance and thickness. After we found the best values of albedo and g under the initial dust distribution, then we tried to find the best fit for the 3D dust distributions under the former albedo and g. This process was iterated until the (albedo, g) converges certain values with the corresponding 3D distribution of dust clouds. Finally, dust properties and 3D distribution derived by this process can give us further reliable information for the Orion Eridanus Superbubble region.

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