Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...385l..53c&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 385, Feb. 1, 1992, p. L53-L57.
Astronomy and Astrophysics
Astronomy
63
Interstellar Space, Optical Polarization, Polarimetry, Ultraviolet Astronomy, Ultraviolet Spectroscopy, Astronomical Models, Cosmic Dust, Frequency Response, Interstellar Extinction
Scientific paper
The first UV spectropolarimetry along six lines of sight with significant interstellar polarization is reported. The observations were obtained with the Wisconsin Ultraviolet Photo-Polarimeter Experiment (WUPPE) during the Astro-1 mission. HD 37903, HD 62542 and HD 99264 show a wavelength dependence which follows the Serkowski relation extrapolated into the UV. HD 25443 and Alpha Cam have UV polarization well in excess of the Serkowski extrapolation. HD 197770 clearly shows a polarization bump which closely matches the 2175 A extinction feature. This bump polarization can be fitted by small aligned graphite disks. The differences along various lines of sight might be the result of differences in the environments which affect the size and alignment of the grains.
Anderson Christopher M.
Babler Brian
Bjorkman Karen S.
Clayton Geoffrey C.
Code Arthur D.
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