First VLTI infrared spectro-interferometry on GCIRS 7 ⋆ Characterizing the prime reference source for Galactic center observations at highest angular resolution

  title={First VLTI infrared spectro-interferometry on GCIRS 7 ⋆ Characterizing the prime reference source for Galactic center observations at highest angular resolution},
  author={Jorg-Uwe Pott and Andreas Eckart and Andreas Glindemann and Stefan Kraus and Rainer Schodel and Andrea M. Ghez and Julien Woillez and Gerd Weigelt},
  journal={Astronomy and Astrophysics},
Context. The massive black hole Sgr A* at the very center of the Galaxy, and its immediate stellar and non-stellar environment, have been studied in the past decade with increasing intensity and wavelength coverage, revealing surprising results. This research requires the highest angular resolution available to avoid source confusion and to study the physical properties of the objects. Aims. GCIRS 7 is the dominating star of the central cluster in the NIR, so it has been used as wavefront and… 

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