AMBER/VLTI Observations of the B[e] Star MWC 300
- 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: Aims. We study the enigmatic B[e] star MWC?300 to investigate its disk and binary with milli-arcsecond-scale angular resolution.
Methods. We observed MWC?300 with the VLTI/AMBER instrument in the H and K bands and compared these observations with temperature-gradient models to derive model parameters.
Results. The measured low visibility values, wavelength dependence of the visibilities, and wavelength dependence of the closure phase directly suggest that MWC?300 consists of a resolved disk and a close binary. We present a model consisting of a binary and a temperature-gradient disk that is able to reproduce the visibilities, closure phases, and spectral energy distribution. This model allows us to constrain the projected binary separation (~4.4?mas or ~7.9?AU), the flux ratio of the binary components (~2.2), the disk temperature power-law index, and other parameters.
AMBER/VLTI Observations of the B[e] Star MWC 300
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Additional Information
- Publication
- Astronomy & Astrophysics, vol. 545
- Language: English
- Date: 2012
- Keywords
- stars: individual: MWC 300, binaries: general, circumstellar matter, techniques: interferometric