Two planets around Kapteyn's star: a cold and a temperate super-Earth orbiting the nearest halo red dwarf

@article{AngladaEscud2014TwoPA,
  title={Two planets around Kapteyn's star: a cold and a temperate super-Earth orbiting the nearest halo red dwarf},
  author={G. Anglada-Escud{\'e} and P. Arriagada and M. Tuomi and M. Zechmeister and J. Jenkins and A. Ofir and S. Dreizler and E. Gerlach and C. Marvin and A. Reiners and S. Jeffers and R. Butler and S. Vogt and P. Amado and C. Rodr{\'i}guez-L{\'o}pez and Z. M. Berdi{\~n}as and J. Morin and J. Crane and S. Shectman and I. Thompson and M. D'iaz and E. Rivera and L. Sarmiento and H. Jones},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2014},
  volume={443}
}
  • G. Anglada-Escudé, P. Arriagada, +21 authors H. Jones
  • Published 2014
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • Exoplanets of a few Earth masses can be now detected around nearby low-mass stars using Doppler spectroscopy. In this paper, we investigate the radial velocity variations of Kapteyn's star, which is both a sub-dwarf M-star and the nearest halo object to the Sun. The observations comprise archival and new HARPS, HIRES and PFS Doppler measurements. Two Doppler signals are detected at periods of 48 and 120 days using likelihood periodograms and a Bayesian analysis of the data. Using the same… CONTINUE READING
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