Astronomy and Astrophysics – Astronomy
Scientific paper
May 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...190.0205c&link_type=abstract
American Astronomical Society, 190th AAS Meeting, #02.05; Bulletin of the American Astronomical Society, Vol. 29, p.780
Astronomy and Astrophysics
Astronomy
Scientific paper
We have obtained the first ultraviolet polarimetric images of the diffuse light of a galaxy, using the rocket-borne Wide-Field Imaging Survey Polarimeter (WISP). Images were obtained of a 1\fdg5 x 4\fdg8 field on the west side of the LMC, obtaining intensities and linear polarizations at 2150 Angstroms. The dominant contributors to the UV flux are large star forming complexes (Lucke & Hodge 1970), individual supergiants (Sanduleak 1970), and young open clusters. The diffuse light is found to be polarized at the ~5%--10% level, indicating a strong, unpolarized contribution from unresolved field stars. The H II complex N11 dominates the UV radiation field in our images; scattered light from this complex is the major contributor to the polarized flux. We have used a Monte Carlo code to model the distribution of UV scattered light and thermal dust emission, and used the results to map the 3-dimensional geometry of the LMC disk.
Cole Andrew A.
Gibson Sister Jean
Harris Walter M.
Nordsieck Kenneth H.
Wood Kathleen
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