Direct Observation of the Fourth Star in the Zeta Cancri System

@inproceedings{JBHutchings2000DirectOO,
  title={Direct Observation of the Fourth Star in the Zeta Cancri System},
  author={J.B.Hutchings and R.F.Griffin and F.Menard},
  year={2000}
}
Direct imaging of the ζ Cnc system has resolved the fourth star in the system, which is in orbit around ζ Cnc C. The presence of the fourth star has been inferred for many years from irregularities in the motion of star C, and recently from C’s spectroscopic orbit. However, its mass is close to that of C, making its non-detection puzzling. Observing at wavelengths of 1.2, 1.7, and 2.2 µ with the adaptive-optics system of the CFHT, we have obtained images which very clearly reveal star D and… 
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Abbas M. M., Michelsen H.A., Gunson M. R., Abrams M. C., Newchurch M. J., Salawitch R. J., Chang A. Y., Goldman A., Irion F. W., Manney G. L., Moyer E. J., Nagaraju R., Risland C. P., Stiller G. P.,

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