Near Infrared Polarimetric Imaging of the Giant H II region NGC 3576

Details Near Infrared Polarimetric Imaging of the Giant H II region NGC 3576 Near Infrared Polarimetric Imaging of the Giant H II region NGC 3576

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..404...27s&link_type=abstract

The Eighth Pacific Rim Conference on Stellar Astrophysics: A Tribute to Kam-Ching Leung ASP Conference Series, Vol. 404, proceed

Astronomy and Astrophysics

Astrophysics

Scientific paper

NGC 3576 is one of the brightest H II regions in the infrared harboring a group of massive stars with infrared excess indicative of their youth. We present the near-infrared JHKs polarization images taken by SIRPOL, an infrared polarimeter camera mounted on the IRSF (Infra-Red Survey Facility) telescope in Sutherland, South Africa. An overall scattering pattern is seen centrally symmetric around the luminous stellar group, indicating their dominant role in illuminating the nebulosity. Organized scattering patterns also reveal special dust distribution around embedded infrared sources, e.g., a dust ridge which may be associated with IRS-1 #60. We find no systematic polarization of background stars, which may indicate an entangled magnetic field structure in a turbulent environment of massive star formation.

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