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Circumstellar environment of the B[e] star MWC 349 (V 1478 Cyg)

Published online by Cambridge University Press:  26 May 2016

R.V. Yudin
R.V. Yudin*
Affiliation:
Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, 196140 Saint-Petersburg, Russia

Extract

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Quasi-simultaneous optical and IR photometric (BVRIJHK-bands) and optical polarimetric (RI-bands) observations were made at the 1m telescope of the Assy Observatory, Institute of Astrophysics of Kazakhstan between October 1985 and August 1992. We used the photopolarimeter of the Pulkovo Observatory described by Bergner et al. (1988). Most of our measurements were done with an aperture of 26″. We obtained 26 polarimetric measurements of MWC 349, mainly in the R band. Our data show significant variations in the polarization which has not been reported previously. The amplitude of the polarization parameters is: ΔP = 8% and ΔP.A. = 15°. During 12–13.09.90 five polarimetric observations have been obtained and ΔP = 3% on a time scale of 7 hours was detected. We found strong photometric variability in all photometric bands. There is however no correlation between brightness and polarization in any photometric band.

Type
6. Be Stars: Circumstellar Environment
Information
Symposium - International Astronomical Union , Volume 162: Pulsation, Rotation and Mass Loss in Early-Type Stars , 1994 , pp. 394 - 395
Copyright
Copyright © Kluwer 1994 

References

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