Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...401l.105s&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 401, no. 2, p. L105-L108.
Astronomy and Astrophysics
Astrophysics
39
Astronomical Polarimetry, B Stars, Peculiar Stars, Reflection Nebulae, Stellar Spectrophotometry, Ultraviolet Spectroscopy, Emission Spectra, Interstellar Matter, Linear Polarization, Stellar Envelopes, Stellar Magnetic Fields
Scientific paper
We report the first ultraviolet spectropolarimetry of the peculiar B-type emission-line star with infrared excess HD 45677. The observations were obtained during the 1990 December Astro-l space shuttle mission with the Wisconsin Ultraviolet Photo-Polarimeter Experiment, and cover the spectral range 1400-3220 A. We also present the first optical spectropolarimetry, extending from the atmospheric cutoff to about 7600 A. The observed UV/optical linear polarization displays a strong increase toward shorter wavelengths indicative of scattering by circumstellar dust. The position angle of the intrinsic polarization flips by 90 deg in the near-UV as expected from a bipolar reflection nebula.
Anderson Martha C.
Babler Brian L.
Bjorkman Karen S.
Clayton Geoff C.
Code Arthur D.
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