Evidence for a bipolar nebula around the peculiar B(e) star HD 45677 from ultraviolet spectropolarimetry

Abstract

view Abstract Citations (48) References (18) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Evidence for a Bipolar Nebula around the Peculiar B[e] Star HD 45677 from Ultraviolet Spectropolarimetry Schulte-Ladbeck, R. E. ; Shepherd, D. S. ; Nordsieck, K. H. ; Code, A. D. ; Anderson, C. M. ; Babler, B. L. ; Bjorkman, K. S. ; Clayton, G. C. ; Magalhaes, A. M. ; Meade, M. R. ; Taylor, M. ; Whitney, B. A. Abstract 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. Publication: The Astrophysical Journal Pub Date: December 1992 DOI: 10.1086/186682 Bibcode: 1992ApJ...401L.105S Keywords: Astronomical Polarimetry; B Stars; Peculiar Stars; Reflection Nebulae; Stellar Spectrophotometry; Ultraviolet Spectroscopy; Emission Spectra; Interstellar Matter; Linear Polarization; Stellar Envelopes; Stellar Magnetic Fields; Astrophysics; POLARIZATION; STARS: INDIVIDUAL HENRY DRAPER NUMBER: HD 45677; STARS: EMISSION-LINE; BE; STARS: MASS LOSS full text sources ADS | data products MAST (3) SIMBAD (1)