Tracing the Dynamic Orbit of the Young, Massive High-eccentricity Binary System θ1 Orionis C.
First results from VLTI aperture-synthesis imaging and ESO 3.6-metre visual speckle interferometry
Kraus, S., Weigelt, G., Balega, Y., Docobo, J., Hofmann, K.-H., Preibisch, T., Schertl, D., Tamazian, V., Driebe, T., Ohnaka, K., Petrov, R., Schöller, M., Smith, M.
The Messenger, Vol.136, 44-48 (2009)
Abstract
Located in the Orion Trapezium Cluster, θ1 Ori C is one of the youngest and nearest high-mass stars known. Besides its unique properties as an oblique magnetic rotator, the star happens to be a close
(~20 milliarcseconds) binary system, which makes it an ideal laboratory to determine the fundamental parameters of young hot stars. In this article, we report on our 11-year interferometric monitoring campaign, which
covers nearly the full dynamic orbit of the system and resulted in the first interferometric images obtained with the VLT interferometer (VLTI) in the infrared (~20 µm) and diffraction-limited bispectrum speckle
interferometry at the ESO 3.6-metre telescope at visual (440 nm) wavelengths.
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