First Resolved Images of the Eclipsing and Interacting Binary β Lyrae

  title={First Resolved Images of the Eclipsing and Interacting Binary $\beta$ Lyrae},
  author={Ming Zhao and Douglas R. Gies and John D. Monnier and Nathalie D. Thureau and Ettore Pedretti and F. Baron and A. M{\'e}rand and Theo A. ten Brummelaar and Harold A. Mcalister and Stephen T. Ridgway and Nils H. Turner and Judit Sturmann and Laszlo Sturmann and Christopher D. Farrington and P. J. Goldfinger . University of Michigan and . The Chara Array and Georgia State University and . University of St. Andrews and Scotland and UK. and .University of Cambridge and .National Optical Astronomy Observatory and Noao},
  journal={The Astrophysical Journal Letters},
  pages={L95 - L98}
We present the first resolved images of the eclipsing binary β Lyrae, obtained with the CHARA Array interferometer and the MIRC combiner in the H band. The images clearly show the mass donor and the thick disk surrounding the mass gainer at all six epochs of observation. The donor is brighter and generally appears elongated in the images, the first direct detection of photospheric tidal distortion due to Roche lobe filling. We also confirm expectations that the disk component is more elongated… 

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