A planetary companion around the K giant Corona Borealis

  title={A planetary companion around the K giant Corona Borealis},
  author={Byeong-Cheol Lee and Inwoo Han and Myeong-Gu Park and David Mkrtichian and Kang-Min Kim},
  journal={Astronomy and Astrophysics},
Aims. Our aim is to search for and study the origin of the low-amplitude and long-periodic radial velocity (RV) variations in K giants. Methods. We present high-resolution RV measurements of K2 giantCrB from February 2005 to January 2012 using the fiber-fed Bohyunsan Observatory Echelle Spectrograph (BOES) at the Bohyunsan Optical Astronomy Observatory (BOAO). Results. We find that the RV measurements forCrB exhibit a periodic variation of 417.9 ± 0.5 days with a semi-amplitude of 129.4 ± 2. 0m… 

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