Bispectrum speckle interferometry of the B[e] star MWC 349A
- UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
- Anatoly S. Miroshnichenko, Professor (Creator)
- Institution
- The University of North Carolina at Greensboro (UNCG )
- Web Site: http://library.uncg.edu/
Abstract: We present the results of bispectrum speckle interferometry of the B[e] star MWC 349A obtained with the SAO 6 m telescope. Our diffraction-limited J-, H-, and K-band images (resolutions 43–74 mas) suggest the star is surrounded by a circumstellar disk seen almost edge-on. The observed visibility shape is consistent with a two-component elliptical disk model, probably corresponding to the gaseous and dusty components of the disk. We show that the classification of the object as a pre-main-sequence star or a young planetary nebula is problematic. An analysis
of the uncertainties in the basic parameter determination lead us to the conclusion that MWC 349A is probably either a B[e] supergiant or a binary system, in which the B[e]-companion dominates the observed properties.
Bispectrum speckle interferometry of the B[e] star MWC 349A
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Created on 2/2/2008
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Additional Information
- Publication
- arXiv:astro-ph/0209533, Astron.Astrophys. 395 (2002) 891-898
- Language: English
- Date: 2008
- Keywords
- Image processing, B[e] star, emission-line, MWC 349A, bispectrum speckle interferometry