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4 August 2016 Sharp images of WR104
A. Soulain, F. Millour, B. Lopez, E. Lagadec, A. Matter, K.-H. Hofmann
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Proceedings Volume 9907, Optical and Infrared Interferometry and Imaging V; 99073R (2016) https://doi.org/10.1117/12.2232384
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom
Abstract
Some carbon-rich Wolf-Rayet stars are permanent dust producers, as seen by their infrared excess. In famous targets like WR104, the dust is found in the form of a pinwheel nebula around the central source, providing an indirect evidence of binarity. WR104 has been studied in details with the Keck, and more recently with the VLTI by our team. We present here images obtained with the SPHERE instrument and modelling based on AMBER data. First results show that the pinwheel appears to be diluted by diffuse emission. Moreover, a minimum distance between the central binary and the dust-formation zone appears necessary to reproduce both the AMBER and SPHERE data.
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A. Soulain, F. Millour, B. Lopez, E. Lagadec, A. Matter, and K.-H. Hofmann "Sharp images of WR104", Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 99073R (4 August 2016); https://doi.org/10.1117/12.2232384
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KEYWORDS
Stars
Data modeling
Optical spheres
Binary data
Deconvolution
Interferometry
Interferometry
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