Possible astrometric discovery of a substellar companion to the closest binary brown dwarf system WISE J104915.57–531906.1

@article{Boffin2014PossibleAD,
  title={Possible astrometric discovery of a substellar companion to the closest binary brown dwarf system WISE J104915.57–531906.1},
  author={H. Boffin and D. Pourbaix and K. Mu{\vz}i{\'c} and V. Ivanov and R. Kurtev and Y. Beletsky and A. Mehner and J. P. Berger and J. Girard and D. Mawet},
  journal={Astronomy and Astrophysics},
  year={2014},
  volume={561}
}
  • H. Boffin, D. Pourbaix, +7 authors D. Mawet
  • Published 2014
  • Physics
  • Astronomy and Astrophysics
  • Using FORS2 on the Very Large Telescope, we have astrometrically monitored over a period of two months the two components of the brown dwarf system WISE J104915.57-531906.1, the closest one to the Sun. Our astrometric measurements – with a relative precision at the milli-arcsecond scale – allowed us to detect the orbital motion and derive more precisely the parallax of the system, leading to a distance of 2.020 ± 0.019 pc. The relative orbital motion of the two objects is found to be perturbed… CONTINUE READING
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