Imaging polarimetry of the starburst galaxy NGC 1808: another M82?
An optical polarization map for the starburst galaxy NGC 1808 is presented. On kiloparsec scales the polarization orientations follow the spiral arms, indicative of a magnetic field that is coherent on a galactic scale. The inner parts (< 750 pc) of the galaxy show a polarization pattern that is...
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Published in | Monthly notices of the Royal Astronomical Society Vol. 264; no. 1; pp. L7 - L12 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Oxford University Press
01.09.1993
Blackwell Science |
Subjects | |
Online Access | Get full text |
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Summary: | An optical polarization map for the starburst galaxy NGC 1808 is presented. On kiloparsec scales the polarization orientations follow the spiral arms, indicative of a magnetic field that is coherent on a galactic scale. The inner parts (< 750 pc) of the galaxy show a polarization pattern that is typical of a huge reflection nebula illuminated from within the central activity. Although the galactic nucleus is the dominant illuminating source of this ‘nebula’, the other hotspots make varying contributions to the illumination. The inner reflection nebula is very reminiscent of the one in the archetypal starburst galaxy M82. |
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Bibliography: | istex:B66B95B4A7A92864750F6AA0A456771E5904A453 ark:/67375/HXZ-GC3XMM2C-4 |
ISSN: | 0035-8711 1365-2966 |
DOI: | 10.1093/mnras/264.1.L7 |