Searching for faint companions with VLTI/PIONIER. I. Method and first results

@article{Absil2011SearchingFF,
  title={Searching for faint companions with VLTI/PIONIER. I. Method and first results},
  author={Olivier Absil and J.-B. Le Bouquin and J. P. Berger and Anne-Marie Lagrange and G. Chauvin and Bernard Lazareff and G{\'e}rard Zins and Pierre Haguenauer and L. Jocou and Pierre Y. Kern and Rafael Millan-Gabet and Sylvain Rochat and Wesley A. Traub},
  journal={Astronomy and Astrophysics},
  year={2011},
  volume={535}
}
Context. A new four-telescope interferometric instrument called PIONIER has recently been installed at VLTI. It provides improved imaging capabilities together with high precision. Aims. We search for low-mass companions around a few bright stars using different strategies, and determine the dynamic range currently reachable with PIONIER. Methods. Our method is based on the closure phase, which is the most robust interferometric quantity when searching for faint companions. We computed the… Expand

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