Multi-epoch VLTI-PIONIER imaging of the supergiant V766 Cen

  title={Multi-epoch VLTI-PIONIER imaging of the supergiant V766 Cen},
  author={Markus Wittkowski and F J Abell{\'a}n and B Arroyo-Torres and Andrea Chiavassa and Jos'e Carlos Guirado and J. M. Marcaide and A. Alberdi and Willem J. de Wit and K. H. Hofmann and Anthony Meilland and F. Millour and Shazrene Mohamed and J Sanchez-Bermudez},
  journal={Astronomy and Astrophysics},
The star V766 Cen (=HR 5171A) was originally classified as a yellow hypergiant but lately found to more likely be a 27-36 Msun red supergiant (RSG). Recent observations indicated a close eclipsing companion in the contact or common-envelope phase. Here, we aim at imaging observations of V766 Cen to confirm the presence of the close companion. We used near-infrared H -band aperture synthesis imaging at three epochs in 2014, 2016, and 2017, employing the PIONIER instrument at the Very Large… 

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