4 research outputs found

    The Asymmetrical Wind of the Candidate Luminous Blue Variable MWC 314

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    We present the results of long-term spectropolarimetric and spectroscopic monitoring of MWC 314, a candidate Luminous Blue Variable star. We detect the first evidence of Hα\alpha variability in MWC 314, and find no apparent periodicity in this emission. The total R-band polarization is observed to vary between 2.21% and 3.00% at a position angle consistently around 0\sim0^{\circ}, indicating the presence of a time-variable intrinsic polarization component, hence an asymmetrical circumstellar envelope. We find suggestive evidence that MWC 314's intrinsic polarization exhibits a wavelength-independent magnitude varying between 0.09% and 0.58% at a wavelength-independent position angle covering all four quadrants of the Stokes Q-U plane. Electron scattering off of density clumps in MWC 314's wind is considered as the probable mechanism responsible for these variations.Comment: 19 pages, 6 figures, accepted in PAS

    SPECTROSCOPY AND PHOTOMETRY OF BE STAR MWC340

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    The spectroscopic and photometric observations of Be star MWC 340 made at Fesenkov Astrophysical institute during 2001-2006 are presented
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