Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.200..965c&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 200, Sept. 1982, p. 965-970. Research supported by the Science and Engi
Astronomy and Astrophysics
Astronomy
3
Astronomical Maps, Nebulae, Optical Polarization, Cosmic Dust, H Ii Regions, Hydrogen Ions, Interstellar Magnetic Fields, Interstellar Space, Polarization Characteristics, Stellar Luminosity
Scientific paper
An optical linear polarization map of M17 is presented. The region of the map to the north-east of the ionization front shows a centro-symmetric pattern characteristic of a reflection nebula. The location of the illuminating stars is indicated. To the south-west of the ionization front, in the body of the H II region, significant polarization is observed with orientation predominantly north-south. It is proposed that the H II region is seen through a thin cloud of relatively cold dust, aligned by a magnetic field which is intrinsic to the cloud and may have been locally enhanced on the periphery of M17 when the H II region was formed.
Chesterman J. F.
Scarrott S. M.
Warren-Smith R. F.
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