Kinematics of chromospherically active binaries and evidence of an orbital period decrease in binary evolution

  title={Kinematics of chromospherically active binaries and evidence of an orbital period decrease in binary evolution},
  author={Yuksel Karatas and Selçuk Bilir and Zeki Eker and Osman Mirza Demircan},
  journal={Monthly Notices of the Royal Astronomical Society},
The kinematics of 237 chromospherically active binaries (CABs) were studied. The sample is heterogeneous with different orbits and physically different components from F to M spectral-type main-sequence stars to G and K giants and supergiants. The computed U, V, W space velocities indicate that the sample is also heterogeneous in velocity space. That is, both kinematically younger and older systems exist among the non-evolved main sequence and the evolved binaries containing giants and… 

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