Other
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.3004k&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #30.04; Bulletin of the American Astronomical Society, V
Other
Scientific paper
The Orion Nebula and its associated population of stars are amongst the best studied objects in the sky. The HII region excited by the Trapezium, the two massive young sources, IRc2 and BN, the Bright Bar, and the Orion Nebular Cluster are best clearly seen in recent infrared images. However, wide-field infrared/optical imaging was scant in this famous region. We have conducted wide-field (8'x8') polarimetric imaging in near-infrared (JHKs bands, simultaneously) with our IRSF/SIRIUS instrument in South Africa. The polarization images contain a wealth of information, including: a very extended bipolar infrared reflection nebula (IRN), illuminated by a cluster of young stars; several other, smaller-scale, IRN systems around less-massive young stars including the famous optical source theta 2 Ori C; and a number of unresolved systems around young stars and brown dwarfs showing possible intrinsic polarizations. We have also performed aperture polarimetry of 500 point-like sources, which reveals the detailed magnetic field structure within the cloud. They are compared with the far-infrared and sub-millimeter polarimetry.
Hashimoto Jun
Hough James H.
Kandori Ryo
Kusakabe Nobuhiko
Nagashima Chie
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