Physical processes in the ISM

Wide-field Near-Infrared Polarimetry of the Orion A molecular cloud

23 Oct 2013, 09:00

5h

MPE

Poster Poster Session: The magnetised ISM (Poster 41-42)

Speaker

Amnart Sukom (The Graduate University for Advanced Studies)

Description

We present first wide-field deep near-infrared imaging polarimetry (15'x60') of the Orion A Integral Shape Filament obtained with SIRPOL, simultaneous JHKs imaging polarimeter on the IRSF telescope. Most derived magnetic field orientations from aperture polarimetry are perpendicular to the elongation of the ISF. The extended H-band polarization pattern confirms the hourglass shaped structure on M42 that consistent with sub-mm dust emission polarization. The polarization coefficients, the correlations between P(H) and H-Ks, for OMC-1, OMC-2, OMC-3, OMC-4 are 6.1, 2.9, 4.8 and 4.3, respectively.